Just a few things, ive had my bike for 2 weeks now and havnt really checked anything. But now that i saw it needs oil, I realised ive been neglecting the routine checks/services. So my questions are, What oil should I use? How often should I lube the chain, what oil and how do you do it. What pressure should the tires be at, and what other things should I do to keep my bike in check? thanks.