In the application guide for Wechat you will find the following information:
How to start Wechat, Wechat Video Call, you need to know, tips and tricks. Each part of the program is structured to teach you the basics of Wechat.
This is a fairly informative application if you are just starting to use Wechat.
Disclaimer: This application is not an official Wechat. This application only introduces the user to the functions of Wechat.