Hey guys, I just picked up this bike and the guy said he cleaned the carb, changed the plugs, and put a new air filter in but he said I probably should change the oil. Is this a chore? How should I put the bike, just leave it on the kickstand? Also, he told me I should lube my chain before every ride, and he gave me what he had left, is that right? And my buddy said I should loosen something and pull the tire back to tighten the chain often, how often should I do this and what do I loosen? I also want to change the headlight bulb to like a stock white or whatever, there is some gay blue/greeen one in there, but I think I figured out how to change it. Anything else I need to know on a bike? What's a "tune up" consist of and how to I make sure my bike is performing top notch? When should I consider getting new tires, any way to measure? Thanks for any help, I'm sure I'll have more questions once I begin riding.