diff --git a/_tour/abstract-type-members.md b/_tour/abstract-type-members.md
index 885aa43d62..34eaa380bb 100644
--- a/_tour/abstract-type-members.md
+++ b/_tour/abstract-type-members.md
@@ -2,7 +2,7 @@
 layout: tour
 title: Abstract Type Members
 partof: scala-tour
-num: 23
+num: 25
 next-page: compound-types
 previous-page: inner-classes
 topics: abstract type members
diff --git a/_tour/annotations.md b/_tour/annotations.md
index 84c2391e5f..d424dd0155 100644
--- a/_tour/annotations.md
+++ b/_tour/annotations.md
@@ -3,8 +3,8 @@ layout: tour
 title: Annotations
 partof: scala-tour
 
-num: 32
-next-page: default-parameter-values
+num: 34
+next-page: packages-and-imports
 previous-page: by-name-parameters
 
 redirect_from: "/tutorials/tour/annotations.html"
diff --git a/_tour/basics.md b/_tour/basics.md
index 95b4f303f9..48b72d54c1 100644
--- a/_tour/basics.md
+++ b/_tour/basics.md
@@ -322,3 +322,7 @@ object Main {
     println("Hello, Scala developer!")
 }
 ```
+
+## More resources
+
+* [Scala book](/overviews/scala-book/prelude-taste-of-scala.html) overview
diff --git a/_tour/by-name-parameters.md b/_tour/by-name-parameters.md
index 5a842997bf..cf4fd9c6af 100644
--- a/_tour/by-name-parameters.md
+++ b/_tour/by-name-parameters.md
@@ -3,7 +3,7 @@ layout: tour
 title: By-name Parameters
 partof: scala-tour
 
-num: 31
+num: 33
 next-page: annotations
 previous-page: operators
 
diff --git a/_tour/case-classes.md b/_tour/case-classes.md
index 37a8f5e5d2..f07d1f2f92 100644
--- a/_tour/case-classes.md
+++ b/_tour/case-classes.md
@@ -3,7 +3,7 @@ layout: tour
 title: Case Classes
 partof: scala-tour
 
-num: 11
+num: 13
 next-page: pattern-matching
 previous-page: multiple-parameter-lists
 prerequisite-knowledge: classes, basics, mutability
@@ -54,3 +54,7 @@ message5.recipient // claire@bourgogne.fr
 message5.body  // "Me zo o komz gant ma amezeg"
 ```
 The recipient of `message4` is used as the sender of `message5` but the `body` of `message4` was copied directly.
+
+## More resources
+
+* Learn more about case classes in the [Scala Book](/overviews/scala-book/case-classes.html)
diff --git a/_tour/classes.md b/_tour/classes.md
index fa186352e5..4b32c78aee 100644
--- a/_tour/classes.md
+++ b/_tour/classes.md
@@ -4,7 +4,7 @@ title: Classes
 partof: scala-tour
 
 num: 4
-next-page: traits
+next-page: default-parameter-values
 previous-page: unified-types
 topics: classes
 prerequisite-knowledge: no-return-keyword, type-declaration-syntax, string-interpolation, procedures
@@ -108,3 +108,8 @@ class Point(x: Int, y: Int)
 val point = new Point(1, 2)
 point.x  // <-- does not compile
 ```
+
+## More resources
+
+* Learn more about Classes in the [Scala Book](/overviews/scala-book/classes.html)
+* How to use [Auxiliary Class Constructors](/overviews/scala-book/classes-aux-constructors.html)
diff --git a/_tour/compound-types.md b/_tour/compound-types.md
index ffd38ede95..6bb6cf9009 100644
--- a/_tour/compound-types.md
+++ b/_tour/compound-types.md
@@ -3,7 +3,7 @@ layout: tour
 title: Compound Types
 partof: scala-tour
 
-num: 24
+num: 26
 next-page: self-types
 previous-page: abstract-type-members
 
diff --git a/_tour/default-parameter-values.md b/_tour/default-parameter-values.md
index f0674fc826..c662fd151a 100644
--- a/_tour/default-parameter-values.md
+++ b/_tour/default-parameter-values.md
@@ -3,9 +3,9 @@ layout: tour
 title: Default Parameter Values
 partof: scala-tour
 
-num: 33
+num: 6
 next-page: named-arguments
-previous-page: annotations
+previous-page: classes
 prerequisite-knowledge: named-arguments, function syntax
 
 redirect_from: "/tutorials/tour/default-parameter-values.html"
diff --git a/_tour/extractor-objects.md b/_tour/extractor-objects.md
index b4156abd13..5441efe6e0 100644
--- a/_tour/extractor-objects.md
+++ b/_tour/extractor-objects.md
@@ -3,7 +3,7 @@ layout: tour
 title: Extractor Objects
 partof: scala-tour
 
-num: 16
+num: 18
 next-page: for-comprehensions
 previous-page: regular-expression-patterns
 
diff --git a/_tour/for-comprehensions.md b/_tour/for-comprehensions.md
index 3f322d5ad9..49ad9f3ab5 100644
--- a/_tour/for-comprehensions.md
+++ b/_tour/for-comprehensions.md
@@ -3,7 +3,7 @@ layout: tour
 title: For Comprehensions
 partof: scala-tour
 
-num: 17
+num: 19
 next-page: generic-classes
 previous-page: extractor-objects
 
@@ -62,3 +62,7 @@ def foo(n: Int, v: Int) =
 
 foo(10, 10)
 ```
+
+## More resources
+
+* Other examples of "For comprehension" in the [Scala Book](/overviews/scala-book/for-expressions.html)
diff --git a/_tour/generic-classes.md b/_tour/generic-classes.md
index 9d1af2b058..cf654cc4aa 100644
--- a/_tour/generic-classes.md
+++ b/_tour/generic-classes.md
@@ -3,7 +3,7 @@ layout: tour
 title: Generic Classes
 partof: scala-tour
 
-num: 18
+num: 20
 next-page: variances
 previous-page: for-comprehensions
 assumed-knowledge: classes unified-types
diff --git a/_tour/higher-order-functions.md b/_tour/higher-order-functions.md
index f4d63c68f4..14a02d3620 100644
--- a/_tour/higher-order-functions.md
+++ b/_tour/higher-order-functions.md
@@ -3,7 +3,7 @@ layout: tour
 title: Higher-order Functions
 partof: scala-tour
 
-num: 8
+num: 10
 next-page: nested-functions
 previous-page: mixin-class-composition
 
@@ -35,7 +35,7 @@ val salaries = Seq(20000, 70000, 40000)
 val newSalaries = salaries.map(x => x * 2) // List(40000, 140000, 80000)
 ```
 Notice how `x` is not declared as an Int in the above example. That's because the
-compiler can infer the type based on the type of function map expects. An even more idiomatic way to write the same piece of code would be:
+compiler can infer the type based on the type of function map expects (see [Currying](/tour/multiple-parameter-lists.html). An even more idiomatic way to write the same piece of code would be:
 
 ```tut
 val salaries = Seq(20000, 70000, 40000)
diff --git a/_tour/implicit-conversions.md b/_tour/implicit-conversions.md
index 09d9f747b4..6f8f897d2f 100644
--- a/_tour/implicit-conversions.md
+++ b/_tour/implicit-conversions.md
@@ -3,7 +3,7 @@ layout: tour
 title: Implicit Conversions
 partof: scala-tour
 
-num: 27
+num: 29
 next-page: polymorphic-methods
 previous-page: implicit-parameters
 
diff --git a/_tour/implicit-parameters.md b/_tour/implicit-parameters.md
index 72ff7d639e..7bb0b06d81 100644
--- a/_tour/implicit-parameters.md
+++ b/_tour/implicit-parameters.md
@@ -3,7 +3,7 @@ layout: tour
 title: Implicit Parameters
 partof: scala-tour
 
-num: 26
+num: 28
 next-page: implicit-conversions
 previous-page: self-types
 
diff --git a/_tour/inner-classes.md b/_tour/inner-classes.md
index 46f134c46c..a2c5bf8e56 100644
--- a/_tour/inner-classes.md
+++ b/_tour/inner-classes.md
@@ -3,7 +3,7 @@ layout: tour
 title: Inner Classes
 partof: scala-tour
 
-num: 22
+num: 24
 next-page: abstract-type-members
 previous-page: lower-type-bounds
 
diff --git a/_tour/lower-type-bounds.md b/_tour/lower-type-bounds.md
index 2196b179ff..bde9bd907f 100644
--- a/_tour/lower-type-bounds.md
+++ b/_tour/lower-type-bounds.md
@@ -3,7 +3,7 @@ layout: tour
 title: Lower Type Bounds
 partof: scala-tour
 
-num: 21
+num: 23
 next-page: inner-classes
 previous-page: upper-type-bounds
 prerequisite-knowledge: upper-type-bounds, generics, variance
diff --git a/_tour/mixin-class-composition.md b/_tour/mixin-class-composition.md
index 35420710e8..520a753e3b 100644
--- a/_tour/mixin-class-composition.md
+++ b/_tour/mixin-class-composition.md
@@ -3,7 +3,7 @@ layout: tour
 title: Class Composition with Mixins
 partof: scala-tour
 
-num: 7
+num: 9
 next-page: higher-order-functions
 previous-page: tuples
 prerequisite-knowledge: inheritance, traits, abstract-classes, unified-types
diff --git a/_tour/multiple-parameter-lists.md b/_tour/multiple-parameter-lists.md
index f3c5dd905c..64fa8bed8c 100644
--- a/_tour/multiple-parameter-lists.md
+++ b/_tour/multiple-parameter-lists.md
@@ -3,7 +3,7 @@ layout: tour
 title: Multiple Parameter Lists (Currying)
 partof: scala-tour
 
-num: 10
+num: 12
 next-page: case-classes
 previous-page: nested-functions
 
diff --git a/_tour/named-arguments.md b/_tour/named-arguments.md
index 21696c4695..764a696bbb 100644
--- a/_tour/named-arguments.md
+++ b/_tour/named-arguments.md
@@ -3,8 +3,8 @@ layout: tour
 title: Named Arguments
 partof: scala-tour
 
-num: 34
-next-page: packages-and-imports
+num: 5
+next-page: traits
 previous-page: default-parameter-values
 prerequisite-knowledge: function-syntax
 
diff --git a/_tour/nested-functions.md b/_tour/nested-functions.md
index d322ba04ad..9dca50d5ee 100644
--- a/_tour/nested-functions.md
+++ b/_tour/nested-functions.md
@@ -3,7 +3,7 @@ layout: tour
 title: Nested Methods
 partof: scala-tour
 
-num: 9
+num: 11
 next-page: multiple-parameter-lists
 previous-page: higher-order-functions
 
diff --git a/_tour/operators.md b/_tour/operators.md
index 5d1699ff25..e16ed48080 100644
--- a/_tour/operators.md
+++ b/_tour/operators.md
@@ -3,7 +3,7 @@ layout: tour
 title: Operators
 partof: scala-tour
 
-num: 30
+num: 32
 next-page: by-name-parameters
 previous-page: type-inference
 prerequisite-knowledge: case-classes
diff --git a/_tour/packages-and-imports.md b/_tour/packages-and-imports.md
index 29ad7bc253..d9f2491a6a 100644
--- a/_tour/packages-and-imports.md
+++ b/_tour/packages-and-imports.md
@@ -4,8 +4,8 @@ title: Packages and Imports
 partof: scala-tour
 
 num: 35
-previous-page: named-arguments
 next-page: package-objects
+previous-page: annotations
 ---
 
 # Packages and Imports
diff --git a/_tour/pattern-matching.md b/_tour/pattern-matching.md
index 09a152b08e..8dc10c4aa2 100644
--- a/_tour/pattern-matching.md
+++ b/_tour/pattern-matching.md
@@ -3,8 +3,7 @@ layout: tour
 title: Pattern Matching
 partof: scala-tour
 
-num: 12
-
+num: 14
 next-page: singleton-objects
 previous-page: case-classes
 prerequisite-knowledge: case-classes, string-interpolation, subtyping
@@ -147,3 +146,7 @@ This is useful for pattern matching because we don't need a "catch all" case.
 
 Scala's pattern matching statement is most useful for matching on algebraic types expressed via [case classes](case-classes.html).
 Scala also allows the definition of patterns independently of case classes, using `unapply` methods in [extractor objects](extractor-objects.html).
+
+## More resources
+
+* More details on match expressions in the [Scala Book](/overviews/scala-book/match-expressions.html)
\ No newline at end of file
diff --git a/_tour/polymorphic-methods.md b/_tour/polymorphic-methods.md
index 2cd164f21b..a6cdb6f90a 100644
--- a/_tour/polymorphic-methods.md
+++ b/_tour/polymorphic-methods.md
@@ -3,7 +3,7 @@ layout: tour
 title: Polymorphic Methods
 partof: scala-tour
 
-num: 28
+num: 30
 
 next-page: type-inference
 previous-page: implicit-conversions
diff --git a/_tour/regular-expression-patterns.md b/_tour/regular-expression-patterns.md
index ff17dcccab..cd7e61be5e 100644
--- a/_tour/regular-expression-patterns.md
+++ b/_tour/regular-expression-patterns.md
@@ -3,7 +3,7 @@ layout: tour
 title: Regular Expression Patterns
 partof: scala-tour
 
-num: 15
+num: 17
 
 next-page: extractor-objects
 previous-page: singleton-objects
diff --git a/_tour/self-types.md b/_tour/self-types.md
index cec987b9dd..2f659637f0 100644
--- a/_tour/self-types.md
+++ b/_tour/self-types.md
@@ -3,7 +3,7 @@ layout: tour
 title: Self-type
 partof: scala-tour
 
-num: 25
+num: 27
 next-page: implicit-parameters
 previous-page: compound-types
 topics: self-types
diff --git a/_tour/singleton-objects.md b/_tour/singleton-objects.md
index 8704804af4..e50055dc2a 100644
--- a/_tour/singleton-objects.md
+++ b/_tour/singleton-objects.md
@@ -3,8 +3,7 @@ layout: tour
 title: Singleton Objects
 partof: scala-tour
 
-num: 13
-
+num: 15
 next-page: regular-expression-patterns
 previous-page: pattern-matching
 redirect_from: "/tutorials/tour/singleton-objects.html"
@@ -105,3 +104,7 @@ Note: If a class or object has a companion, both must be defined in the same fil
 `static` members in Java are modeled as ordinary members of a companion object in Scala.
 
 When using a companion object from Java code, the members will be defined in a companion class with a `static` modifier. This is called _static forwarding_. It occurs even if you haven't defined a companion class yourself.
+
+## More resources
+
+* Learn more about Companion objects in the [Scala Book](/overviews/scala-book/companion-objects.html)
\ No newline at end of file
diff --git a/_tour/traits.md b/_tour/traits.md
index ce0a115270..65cc279a04 100644
--- a/_tour/traits.md
+++ b/_tour/traits.md
@@ -3,9 +3,9 @@ layout: tour
 title: Traits
 partof: scala-tour
 
-num: 5
+num: 7
 next-page: tuples
-previous-page: classes
+previous-page: named-arguments
 topics: traits
 prerequisite-knowledge: expressions, classes, generics, objects, companion-objects
 
@@ -79,3 +79,9 @@ animals.append(cat)
 animals.foreach(pet => println(pet.name))  // Prints Harry Sally
 ```
 The `trait Pet` has an abstract field `name` that gets implemented by Cat and Dog in their constructors. On the last line, we call `pet.name`, which must be implemented in any subtype of the trait `Pet`.
+
+
+## More resources
+
+* Learn more about traits in the [Scala Book](/overviews/scala-book/traits-intro.html)
+* Use traits to define [Enum](/overviews/scala-book/enumerations-pizza-class.html)
diff --git a/_tour/tuples.md b/_tour/tuples.md
index 1a4286e438..b80271a649 100644
--- a/_tour/tuples.md
+++ b/_tour/tuples.md
@@ -3,7 +3,7 @@ layout: tour
 title: Tuples
 partof: scala-tour
 
-num: 6
+num: 8
 next-page: mixin-class-composition
 previous-page: traits
 topics: tuples
@@ -79,3 +79,7 @@ for ((a, b) <- numPairs) {
 
 Users may sometimes find it hard to choose between tuples and case classes. Case classes have named elements. The names can improve the readability of some kinds of code. In the planet example above, we might define `case class Planet(name: String, distance: Double)` rather than using tuples.
 
+
+## More resources
+
+* Learn more about tuples in the [Scala Book](/overviews/scala-book/tuples.html)
diff --git a/_tour/type-inference.md b/_tour/type-inference.md
index c31370cc79..7599ef9f59 100644
--- a/_tour/type-inference.md
+++ b/_tour/type-inference.md
@@ -3,7 +3,7 @@ layout: tour
 title: Type Inference
 partof: scala-tour
 
-num: 29
+num: 31
 next-page: operators
 previous-page: polymorphic-methods
 ---
diff --git a/_tour/upper-type-bounds.md b/_tour/upper-type-bounds.md
index 5fb24e99d9..37c7a85d86 100644
--- a/_tour/upper-type-bounds.md
+++ b/_tour/upper-type-bounds.md
@@ -3,7 +3,7 @@ layout: tour
 title: Upper Type Bounds
 partof: scala-tour
 categories: tour
-num: 20
+num: 22
 next-page: lower-type-bounds
 previous-page: variances
 
diff --git a/_tour/variances.md b/_tour/variances.md
index 0db1167d3f..2b5f3dacda 100644
--- a/_tour/variances.md
+++ b/_tour/variances.md
@@ -3,7 +3,7 @@ layout: tour
 title: Variances
 partof: scala-tour
 
-num: 19
+num: 21
 next-page: upper-type-bounds
 previous-page: generic-classes