Ok im sure this seesm really simple to most but i'm stumped..

How the heck do i get into new vegas?...I already completed the spy plot for NCR that blew up the tram... so now what?

Go into freeside, there should be the vegas entrance to the south inside freeside. You'll need a passport, 2000 caps or 70 science to get in.

1) Take the tram.
2) 2000 cap credit check (not cost, just have 2000 credits)
3) 500 cap passport
4) King's favor passport.
5) Science check
6) Kill a robot and steal a key.