Need recommendations to start using CSLA 4.5.501

Hello:

I was using CSLA 3.6 now I want to start a new project using CSLA 4.5.501.

Can anybody give a link with first steps?

My first dilemma is I don't which DLL files I must use:

-those which are in Marimer LLC\CSLA .NET\4.5.501\Bin\NET4

-those which are in Marimer LLC\CSLA .NET\4.5.501\Bin\NET

What about differents versions of EF?

I have all the CSLA 4 books. Is in there what am I looking for?

Thanks a lot