Good luck. Wrenching your own bikes is one of the most rewarding aspects of cycling.

Couple tips:

-proper tools go a LONG way toward keeping your sanity. IOW's, don't try to remove the headset with a screwdriver.
-Technique comes with experience. While you may be real handy with tools, if you haven't worked on bikes, there is a learning curve. Just be patient and think each step through before proceeding. Its easy to install a bottom bracket but it's a bit harder to do it without leaving wrench marks.
-Unless you are using a hammer and an impact wrench, its hard to truly mess something up beyond the point that a good shop mechanic can't fix.
-have fun...enjoy the experience AND the results.

55/Rad