I was going down the same path of DE safety razor shaving about a year ago after a friend suggested it to me on Facebook. Here's what I found:

-First, you sub to wicked_edge, did you see this post? It helped me greatly before I began buying anything. Granted, if you're looking to buy second-hand, that link won't help you out a bunch. But I also knowing finding safety razors second-hand is not easy to come by. That post will also help you find your other tools and accessories.

-Absolutely buy online. It will always be cheaper and easier than buying locally or even finding locally (especially here in Gainesville). There are shave stores in Jacksonville, Orlando, and Tampa- but good golly miss molly are they EXPENSIVE. Amazon and buy.com have way better prices. But returning things can be tricky- keep that in mind in case you decide to go big on quality.

-Find a blade sample pack. They offer a big selection and since you're just starting out, you can find what you like. Here's a link to one.

Personally, I don't get the fuss. I've had a safety razor shave, and it was great. But I don't see myself taking good care of my shaving tools to justify investing in something like that. I spend maybe $10 a year on my disposables and apply moisturizer when I finish. Absolutely no bumps, no rash, no irritation. Takes me 2 minutes to shave and I'm out the door. I don't have to worry about losing them, clean them, take care of them, oil them, or buy a brush and lather. Just something to think about before you go investing in safety razors- especially if you're a college student.

Before the downvote boat comes my way- this is JUST my opinion. Sorry to put my pro-affordable shaving agenda.

EDIT: Fuck. OP is my roommate. I just noticed this. Disregard everything, I'll see you at 8:30, buddy.