Really, until you get a few screw-ups under your belt, you don't need much more. I wouldn't mess with actually cutting and facing a fork for installation, or getting a crown race tool, star nut removal/install tool (although you CAN install a star nut with a long allen bolt and a hammer........I just don't suggest it.), other more specialized stuff. For now, let the mechanic do the harder stuff. Learn, first. Get ahold of a good repair manual (I suggest Barnetts, there may be better out there now) and read up. And whatever you do, do NOT try to true or tension your wheels yourself, you're going to end up taking it to the mechanic anyway to fix your screw-up.
You should get a good cable and housing cutter, and learn how to properly install new cables. That, you're going to be doing often. Might as well learn that one.
You should get a good cable and housing cutter, and learn how to properly install new cables. That, you're going to be doing often. Might as well learn that one.