Tyres

If you have never changed a tire yourself, I would recommend having a shop change it, or get a friend who really knows to show you. I change all my tires myself but admittedly it is difficult at best and nearly impossible if you don't have the right tools or information on how to do it. For tools, you just need two or three tire irons, some soapy water to lube the new tire and help it slip on, some baby powder for the tube, and some muscle.

You can do it yourself IF you have someone show you.