Creeg is right. Start small, and bring a friend. That's how I learned. I started doing oil changes and now I'm thinking of doing an engine swap one day. And I'm definitely not the typical "grease monkey" type. 
As for your "not worth the money" logic, let me explain how I decided to do all my own work. First, we all know that we take much better care of our own stuff than anyone else will, so it makes sense to know your vehicle and how to maintain it. That is the most important point in my opinion. It will save you a TON of money byi catching little problems early before they become big problems. Second, think about this. Let's say your mechanic charges $80 an hour. How much is your time worth and how long will it take you to do it? A good measure of how much your time is worth is how much someone else is willing to pay you for your time. A lawyer who makes $100 an hour shouldn't do his own work, but his secretary, who makes $20 an hour, probably should. Does that make sense? Even if it takes you twice as long as the mechanic, until your time becomes worth more than $40/hour, it makes more sense for you to do it yourself.
Calmini Cone Air Filter, PowerVault PV2 Muffler, OME Trooper Springs, Rancho RS9000X Shocks, 285/75R16 Nitto Grappler AT's, Pioneer DEH P8000R In-Dash CD, Amps and Drivers Built by Orion, Wires and Fuse Blocks by KnuKonceptz, Vibration Damping by BQuiet, Alarm System featuring Auto Start and Remote Windows, Yakima LoadWarrior w/Full Size Spare, Debadged/Custom Titanium Grill Logo, Tint (5% Rear / 20% Front), Steel Braided Brake Lines, G2 Painted Calipers