I have a new found appreciation and fascination for maths and would love to study maths from the bottoms ups. I'd love to know the paths I should take and books I should read.

EDIT1: If the question is very broad, it'd be much helpful to know how did you learn math? What courses you took, books you read.

EDIT2: My current proficiency level is pre-high school mathematics as I didn't pay much attention in high school, learning effectively nothing.