As I'm closing in on a year of forum membership, and a year of really mountain biking, I like to think that I'm getting near the end of my embarrassing newb questions, but mechanic skills is something I know that I'm severely lacking in. With a few exceptions most of my entries in the "what did you to to your bike" thread should more truthfully read that I drove it over to Pedaler's Fork and had them do whatever I was looking to have done. My question here is, where/how did you learn how to wrench on your bike? I know there are great videos on YouTube showing how to do almost anything, but that's typically predicated on knowing what the actual problem is to begin with, which for someone like myself isn't always obvious. My more immediate concern is trail side maintenance for something more than flat tires, when something breaks and YouTube isn't exactly an option. REI has a trail side maintenance clinic that they offer from time to time, that I've kind of resigned myself to taking for lack of an obviously better option, though I prejudicially assume it's going to be lame. Any other suggestions to shorten the learning curve, other than committing to trying to work my way through issues as they arise, hamfisted though I might be?