Hi everyone!

So, I've started studying for the GRE and have been trying to gauge where I'm at in terms of Quant to see what I will need to help me study. I bought a book and truly do not remember any form of math they are talking about other then data analysis. I did really well in high school math and never struggled but I really just don't remember anything about solving for x, or factoring or finding the area of a square. I clearly need a brush up on the basics, which leads me to my next point: What is the best course (online, inperson, etc.) to help me refresh these tools so I can apply them to GRE problems and do well? I'm not looking to spend an excessive amount of money, but I am desperate and will take any reccomendations.