"Tips 'n' Tricks for Mastering" is a very informative article. I suggest just reading it if you're interested in mastering your own records.
Mastering continues to be one of those tantalizing pursuits where we'd all like to do it, but aren't sure quite what is needed. Meanwhile, we hear sage advice telling us to leave it alone. "Don't do any fancy compression," we're told. "Leave that for the mastering engineer. He or she has very special compressors that will do a much better job than you can do."Article: Tips 'n' Tricks for Mastering by David Moulton