Content update (section addded)

Author: canchebagur

content/software/plc-ide/tutorials/plc-programming-introduction/content.md

@@ -27,8 +27,22 @@ The goals of this tutorial are:
 
 ### Required Hardware and Software
 
+- [Opta™ Lite](https://store.arduino.cc/products/opta-lite), [Opta™ RS485](https://store.arduino.cc/products/opta-rs485), or [Opta™ WiFi](https://store.arduino.cc/products/opta-wifi) (x1)
 - [Portenta Machine Control](https://store.arduino.cc/products/arduino-portenta-machine-control)
 
+### Arduino PLC IDE User Manual
+
+Before starting this tutorial, please take a moment to locate the online user manual integrated into the PLC IDE programming environment. You can access it from the top menu bar by navigating to **Help > Index**. 
+
+The user manual can be downloaded, stored locally, or printed for your reference. It contains detailed information on the following aspects of the PLC IDE programming environment:
+
+- Overview of the programming environment
+- Project and project elements management
+- Usage of programming languages and functions
+- Debugging tools
+
+This resource is designed to guide you through the various functionalities and features of the Arduino PLC IDE, ensuring a smoother and more efficient programming experience. You can rely on this resource to provide the support and guidance you need.
+
 ## Common Features
 
 ### Variables Addition