3). Visually Inspect Your Bike - I know this sounds like an easy one but just giving your bike the once over before your ride can save you a lot of headache. Check things like your tires, chain, brakes. As do a quick check once you get on your bike to make sure your brakes and shifters are working properly.
5). Store Your Bike Properly - Dumping your bike on the garage floor after your ride is not what we would consider proper bike storage. Ideally you would have a dedicated bike rack so you can properly hang your bike in a secure place where it won't get beat up and also won't get water, dust, grit, and grime on it.
Having a bike rack will also help to organize your home and garage as bikes can take up a lot of room especially if the whole family has one.
Don't want to mount anything you your wall, there are some great options for Free Standing Bike Racks as well.