Projects Documentation Available?

Projects Documentation Available?

I am interested in comparing my documentation on how to use my MS Project (Project 2007 Bible) to Zoho Project documentation that is available.  I want to compare how the basic features work before I take the step of signing up for Zoho Project as a paid user.

Can you tell me what documentation is available, online or otherwise, for users of Zoho Project and also how to access that?  

Thanks!