I stumbled on this page today, the Microsoft Dynamics CRM Developer Portal
CRM Developer portal
CRM MVP’s Wiki –
Brilliant page – Crash course in CRM 2011 development
I was very impressed with the page above, if you are starting out as a CRM developer then the above link is a really good start.
CRM 2011 Hub
The CRM resource centre
The CRM 2011 online resource centre