Hello Stevie, I use this site to help me understand the details:
http://www-users.cs.york.ac.uk/~alistair/survival/ and watching youtube blogs on Aspergers/Autism has been good.. check out stuff by 'bikiniartist' and 'whitetigerdream'. :) the forum Aspergic is really supportive, and there is an informative forum called aspies-for-freedom which is good too!
to get a diagnosis, i suggest you take the AQ and EQ tests here:
http://homepage.mac.com/lpetrich/Asperger/Index.html (by printing them off and pencilling in your answers), then take them with you to your first meeting to look thru.. thats what i did, just makes things easier.