yeah i know its a broad question. its been a few years since ive really done any "real" math and im looking to pursue a degree in engineering in the next year or two. I've always loved math but im a little rusty at the moment. I've looked at several degrees that all generally seem to cover, calc 1 calc 2 linear algebra matrix theory i tried to move on to calc 1 but ive forgotten a lot or just didnt learn certain things making it hard for me to understand everything. I have access to about 200 math books ranging from basic algebra to books with titles i cant even begin to understand. I want to go back and review stuff but im really not sure what to look for. almost every book i open has things it expects me to already know. can someone point me in the right direction? thanks.