Hey guys, Ive got a question for some of you who have been playing for a while.  Are there any good online or print lesson plans out there?  I have been playing for a few years, and Im basically self taught.  I can play a little though and really enjoy it.  I pick my guitar up every day, but I know that my mechanics are horrendous and I figure that its probably hampering my progression greatly.  Basically, I need to learn how to practice properly, un-learn all of my bad habits, and get the most out of when I pick my instrument up.  The problem is, I work nights, all the time, so I can't just go take lessons easily, so I am looking for other options.  Also, I can't spend a fortune as I just bought a house and am really trying not to overextend myself financially.  Any advice would be appreciated so thanks in advance.  Incidentally, I an Alvarez acoustic(don't know the Model), a Dean Performer E acoustic/electric and a pretty cheap Squier strat(vintage modified HSS).