First thing you can do is check out the FAQ under the forum banner, it's full of info that can help you get the upper hand as to the basics of the site. Also checking out the sticky's of each section is wise since most other sections have different rules and guidelines (especially the Discussion section and the like).
As for the friend situation I can't really say who you should be friends with. Looking around, posting and being heard can help you find others with similar interests therefore igniting a conversation and possibly a friendship. It's easy.
While I'm here, you have any general questions for me?
