These pages are designed to help newer players get used to the Zerg race along with some tips.
I recommend you start with the Hotkeys page to make sure that you have the game set up in an optimal way. Doing this is important since you will make bad habits with not ideal hotkeys which can be hard to change later on.
Two series of articles I am working on for new players is an introductory StarCraft 2 series as well as a unit spotlight to get information on all Zerg units and how they are commonly used in game. You can these articles here:
I have planned to release an introductory StarCraft 2 article every Tuesday and am planning to write ~5-6 unit spotlight articles per week until all of the Zerg units (and potentially structures) are covered.