Understand Arduino hardware and build simple projects 

Understand Arduino hardware and build simple projects
Here is the link to project source codes, the wiring and connection details also available as text in the code
Hello world code: bit.ly/3xao86E
Humidity and temperature with LCD wireless code: bit.ly/3xfn9lQ
RGB LED's wireless control: bit.ly/3idW0Ly
Search and install lora library: Open the Arduino IDE and go to Sketch - Include Library - Manage Libraries and search for (LoRa). Scroll down until you find (Lora by sandeepmistry) then install.
Search and install DHT library: Open the Arduino IDE and go to Sketch - Include Library - Manage Libraries and search for (DHT). Scroll down until you find (DHT sensor library by Adafruit) then install.