If you are interested in learning how to tune up your bike, most good shops offer tune up classes where you do the work alongside the mechanic. Some will even offer reduced prices on repair manuals and tools after taking the class.

In regards to the chain cleaning/lube.... I clean my drive chain before taking the bike in for work, a clean bike is easier to work on. I feel it's kind of like going to the doctor and not putting on clean underwear......