as a new commuter, I'm in the market for some tools. I was thinking of just getting a multi-tool. Will this be sufficient for both on the road repairs, and some basic repairs at home or will I want anotehr set for home? Remember, I'm not doing complete bike builds here. Just changing out some tires, pedals, doing some tuning, etc. Which of these multi-tools do you all recomend:

Topeak Hexus
Topeak Alien 2

Also, I need to know HOW to do repairs and such! I ride a mountain bike as my commuter, so I'm hesitant to get the oft-recomended Zin book. Anyone know if this one is any good:

Bicycling Magazine's Complete Guide to Bicycle Maintenance and Repair