Awesome! And let me echo that there's no shame in getting a lift home in this weather. I usually take the 15 to 20 mile scenic route home, but once the heat index hit 100 it's been the short 5 mile ride.

I'm going to second the suggestion to find a local coop as well. You can learn a lot and find an inexpensive ride there. I was really lucky with my first Craigslist bike, a very nice and nicely maintained hybrid that took good care of me while I learned what I was doing. My second bike was a money pit. Still have it, and actually love it now, but had I known what I was doing then, never would have purchased.