@linen it's not geometry (which, at the university level, is a giant mess), but I recommend "a friendly introduction to number theory", which is the best math text I've ever read.
I also might look into knot theory if you're into tangible things. It is related to geometry and topology.
@Maenad Thank you! That's a great place to start, I"ll definitely look those up! I can see myself being into knot theory (I'm a knitter and untangle lots of knots), great suggestion!