I have a few questions about share points 2007 server.

1. how can i connect my CRM server to share points server
2. are there any webcasts regarding sharepoints server (what is sharepoint server, how it works and configurations)
3. how can i create my own workflows
4. lets consider that i have one folder on my pc with some security permissions. if i move this folder onto sharepoints server then all security permissions are applying automatically or i have to define again permissions.
5. what is the best forum to discuss about sharepoints.

i hope that somebody can help me in this regard and thanks