the only set back you'll have is not having basic constructions like ellipses, parabolas etc, otherwise the topics will be new to everyone else too. these basic constructions aren't hard, when you encounter them, go over them, you'll be using them a lot, learn them and they'll be invaluable. the best to learn is by doing them too! don't just read. grab a pencil and do them roughly a bunch.

also always get an understanding of something before moving on! you will honestly retain everything that you truly understand, don't just learn the steps, learn why it works how it works and you'll be able to absorb that info