Re-N00B-ified

[Feggge]

Hi guys!

Tried to ask this question in my previous thread but i think people maybe didn't see it.

As the title implies, I am an old n00b to the game. Meaning that I have played the game before but is now totally lost in all the new stuff that has been added.

SO I am asking for some help, no I don't wanna beg weps from you and ask you for meseta, that ain't my style.

What I want is some pointers as to how the hell to keep track of which weapons to look for, how to know if the prices are "fair" in the player shops and of course, the best way to gather meseta in the game (as I understand it, this game is very much about buying the gear instead of finding it, correct?).

Really just how to play the game nowadays.

So whaddya say, will you help this ren00bified PSU-gamer back on his feet?

EDIT: I'm on X360

Thank you!