Dude, honestly just lease it. Some cars lease insanely well. Find out the residual value on the car, get base money factor, if they have a multiple security deposit option utilize that to buy down the money factor, and most importantly negotiate the selling price. Again Negotiate the selling price. I can't tell you how many stupid people walk into a dealership and start talking monthly payments, just stupid and you will get hosed. If you want, post your deal on the forum or PM me and I'll tell you if you have a crappy deal or not. Yeah, my parents are paying for my lease (to the dude who was mocking me, no I don't have negative equity and I am not leasing it myself), but I do negotiate all the deals in the family and get us BMW/Lexus/Benz for Toyota prices (most dealers think I am a car salesmen and hate dealing with me...but I def get the best deals every time).
As for dealerships, I find the easiest way to structure out your lease is on an Excel and fax/email the internet sales guy or MANAGER directly (DO NOT DEAL with car salesmen or SAs, they don't know jack crap and they don't make the deals). You need to know your numbers inside and out: MSRP, invoice, money factor, residual value, MSD to buy down the rate inside and out. The more knowledge you have the better position you are. Don't get stuck on one dealership or one car, or you will get hosed. Watch out for "fees" like Doc fees which are extremely high in some states (Ca is good about this at like a standard 85 but states like Ga or FL are extremely high at 799...and again that is all profit to them). Do not pay any other fees. Licensing and gov fees vary but expect 400 on this (mandatory).
Again, highly suggest you lease because your income is $0 right now and it is the cheapest way to get the most for your money in the short term. When you get a job in residency, you can start making a higher payment toward owning the car...but again leases are cheaper in the short run and you are poorer in the short run.
So again:
MSRP:
Invoice:
Selling price: Should be around invoice.
Incentives: sometimes these are hard to find, Edmunds typically lists them though. Be careful most dealers try to keep these for themselves. Work the deal then apply the incentives.
Other "fees": Watch out for doc fee as that is pure profit.
Residual amount: Ask them.
Money Factor: Ask them.
MSD (note, I don't know if every manufacturer does this, I only have experience with BMW, Mercedes, Lexus, Infiniti, Porsche who do)
Taxes:
Drive off: DON'T PUT ANY MONEY DOWN, AGAIN DON'T PUT ANY MONEY DOWN ON A LEASE, AGAIN DON'T do a capital cost reduction, stupidest thing you can do on a lease. Only thing you should pay at drive off is acquisition fee which runs like 800 (again only experience with brands above).
Monthly: this is last and should be last, you NEVER, NEVER, NEVER, NEVER, NEVER, NEVER ever shop by monthly payments or you will get hosed like there is no tomorrow
Follow everything I say, and you will be all set. Again, if you need any help post here or PM me. Cool.