Just spent all evening looking through EQ tutorials.  Fun stuff.

This one was most helpful imo: http://www.youtube.com/watch?v=ESVRCT28d5o

You really do need an analyzer to pick out the bad frequencies to cut.  I wish I knew this stuff sooner - would save me a lot of headaches trying to make my stuff sound cleaner.

Current song in experimentation is "Nightfall."  We'll see how clean I can make this next piece...