The best best is the msdn documentation.
#1 :
http://msdn.microsoft.com/en-us/library/dd776256.aspx
#2:
http://sharepoint.microsoft.com/blog/Pages/BlogPost.aspx?PageType=4&ListId={72C1C85B-1D2D-4A4A-90DE-CA74A7808184}&pID=462
#3:
http://msdn.microsoft.com/en-gb/sharepoint/ee514561.aspx
You can't go wrong with that.
I would also recommend you being active in these four official sharepoint blogs - The Best thing to do.
#1 :
http://social.msdn.microsoft.com/Forums/en-US/sharepoint2010general/threads
#2:
http://social.msdn.microsoft.com/Forums/en-US/sharepoint2010setup/threads
#3:
http://social.msdn.microsoft.com/Forums/en-US/sharepoint2010customization/threads
#4:
http://social.msdn.microsoft.com/Forums/en-US/sharepoint2010programming/threads
You could follow all kinds of questions and solutions.
Lastly, there is always our blog - http://shopsharepoint.com/blog.aspx
Hope this helps