I bought this when I was like 19 and going through some "i'm going to be a physicist" mental break and obsessing over michio kaku and wild theories and it made absolutely no sense to me at all. Do I need to try again now that I'm a grown adult?
Do you remember what you were confused about? The book does not assume the reader has any advanced math education (from what I remember) - it tries to teach you the relevant math itself. It is long and windy though, so maybe you read through too quickly or got bored. You'll probably have more success with it now that you're more mature.
I do not know math well.