WordPress Beginner
Learn WordPress

Installing a theme (tutorial by Siteground)

How to Install a plugin ( simple tutorial by siteground )
Installing plugins step by step (guide by wpbeginner)

Choosing the right plugin for your needs ( wpexplorer )
The best plugins for backups ( wpbeginner )
Plugins for woocommerce ( wpbeginner )
Security plugin choices ( wpblog )

Adding Posts to WordPress

Using the media library

Woocommerce tutorial from Torque Magazine
Guided Tour from Woocommerce team