Congratulations... but, really, if I'd had a decent axe back in college, I'd probably have put it under the care of my parents & got myself a decent beat-up $100 guitar.
That's even more true if you are living in a dormitory or if there is EVER going to be drinking involved.
No matter how hard you try, you eventually WILL give it a significant chip, gouge, or ding. This might occur years from now, or a few hours, but it WILL happen. The only way to avoid that would be to lock the guitar safely away & never play it, & what would the point of THAT be, right?
So, first thing to consider: insurance. It'll cost you a few bucks a month, but that protects at least SOME of your cost if it winds up stolen, vandalized by a rival or ex-lover, destroyed by fire or flood, lost by the airline, etc.
Get it an initial setup at an actual guitar shop.
Humidifier, yes. Locking hardshell case, definitely (but I have always played big dreadnoughts, so I can simply hold onto a quality case while the guitars come & go over the years).
From a violin ship (or credible music store), a small bottle of lemon oil to keep the fretboard properly maintained. (It lasts practically forever since you need like two drops a month.)
DO NOT get all carried away with commercial polishes, especially AVOID those containing silicone. Lightly dust it, wipe down the frets regularly, otherwise remove grime with LIGHT application of MILDLY soapy water then wipe it off. (I used to recommend Octagon "Crystal White" dish soap, but that's often difficult to find, so Dawn Ultra is fine, so long as the water is only somewhat blue.) If that doesn't take the soil off, you might need to occasionally use a drop of alcohol & a SOFT cloth.
Aside from that, play it long & often, because that works wonders helping a new guitar "break in" properly as the glue continues curing.
