Bike Ride

So I bought a bike today from costco. Everyone online seems to think that it's a piece of junk cause I got it from a store that isn't a bike specialist, but I'm just starting to get into riding, and I have enough expensive hobbies, so $250 will have to do.

I took the front tire off which was super easy, took it to the gas station on the way home and filled up the tires, got it home and sat in my driveway for about 15 minutes trying to get the tire BACK on (that's the hard part) I then ate some food and went for a 1.5 hour bike ride. It's impossible for me re-do my route online to see how many miles I went, but I know it had to be close to 20 since the average guy cycles about 15 mph, so that's pretty exciting. my legs hurt, and so does my stomach, so I'm going to pass out and probably not make it to work on time tomorrow, but it felt great to get out and ride around.

EDIT: I mapped it out and from everything I can remember, which probably isn't everything I got about 18 miles.