Advice for the GMAT prep

I just signed up to take it in July (wanted to do one early, in case I needed to take it again before applying). A lot of people say it’s a more challenging version of the SAT (which I only got a 1860 on w/o studying), which means assuming similar results I need to jump about 80+ points.

Was curious if anyone knew of any good and cheap resources to use for preparing. I know the actual classes are ideal, but I’m a student with a low budget so gotta work with what I got.

Get the official GMAT review book and practice. And sometimes you can get a good deal on online prep courses.