Advice on Liberty Protocol Reading

Hi All. I have been looking round the Liberty site and was a little overwhelmed by the amount of doco to read (on top of a number of other things i have on the go at the moment).

My key interest is in integrating authentication within my own site using Liberty, with a view of a circle of trust type authentication on a set of distributed sites I am creating. Useage of secure shared profile information is something i am also looking at in the future.

The type of shared attributes is quite specific (e.g. financial preferences) so I will want to think about how to easily and securely share this information amoungst a closed set of sites.

I'm appreciated pointers to the parts of the Liberty specs I should read to get this information with a view to integrating the current .Net software (which i believe is derived from the SourceID.Java vesion) into my framework.

Best Wishes,
Steven.