The revered SOD! Aside from mags and Chris Chainelli's RC show on DIY channel, as soon as I discovered u-toob, SOD was also another source of RC information I found excellent!

Yes, watch his vids, do a search and you can find him giving instructions on how to tuen an engine, break one in, rebuilt one, tune your chassis suspension, what each chassis set-up does, and then some. His instructional vids are great and are some of the best instructions for beginner and novice RCers to learn from.