Welcome to Psych Central, mathFTW. One thing you might do, here on PC, is to take some of the quizzes & tests that are on offer. There's a link to the listing of them at the top of the page. However here is a link as well:

Psychological Quizzes and Tests

Here's a link to an article, from Psych Central's archives, on the subject of BPD by our host Dr. John Grohol, Psy.D.:

Borderline Personality Disorder: Symptoms & Treatments

And then, since you mentioned having had issues with trying to communicate with people as well as understanding human relationships, here's a link to an article on the subject of Asperger's Syndrome:

Asperger's Syndrome

I hope you find PC to be of benefit.