CRM 2011 IFD + Sharepoint 2013 configuration

Hi,

We have an up to date greenfield site we are moving over to in the next few weeks, I have CRM all setup on server 2012 - IFD is working outside and internally.

I cannot find any documentation on how Sharepoint should be setup for use with CRM.  Their are loads of SSO with reference to Office365 but nothing for on premise customers.

I would like a logged in user to be able to browse documents that are stored on SharePoint from outside the organisation.

Any help would be very much appreciated.