Once you’re using your bike regularly, develop a maintenance schedule. Clean your bike with rags and lubricate the chain and other parts at least once a week, keep the tire tubes properly inflated and periodically check their air pressure. Go over your bike with a hex wrench set and make sure your nuts and bolts are tight, as well. And if you have to remove a part, especially your wheels, take note of how they’re attached. For example, as I learned the hard way, if your front wheel is removable and you take it off to check the pin, you may put it back the wrong way, which means the brake disc will be on the wrong side, away from your pads, which is exciting to discover when you start going down a hill.