This page has alot of the key links we use all the time with CRM 2011:

 

What's new in Microsoft CRM 2011:    http://msdn.microsoft.com/en-us/library/gg309589.aspx

Here's another "what's new" page:  http://www.opsvault.com/20-reasons-to-upgrade-to-microsoft-dynamics-crm-2011/

 

Good comparison between Microsoft CRM 2011 online version versus on-premise version:

 

 

 Microsoft CRM 2011 Server requirements can be found here:

http://technet.microsoft.com/en-us/library/hh699840.aspx

MIcrosoft CRM 2011 Implementation Guide:

 

Download the CRM 2011 SDK:

Customizing CRM 2011:

 

When you run the CRM 2011 install, you are required to tell CRM which user accounts to run the various CRM services.   Here's a Microsoft write-up on the permissions required by these user accounts:

 

If you run into problems, turn on the trace log in CRM 2011:

 

Upgrading from CRM 4.0 to CRM 2011:

Upgrading customizations:  http://msdn.microsoft.com/en-us/library/gg509046.aspx