http://tutorial.math.lamar.edu/
Also: /r/learnmath
We're friendly!
If you're ambitious (or smarter than me) you could tackle both at the same time.
EDIT: By skip two years, what do you mean? Did you miss out on the typical pre-calc/college algebra/trig courses?
College Algebra/Trig: https://cnx.org/contents/E6wQevFf@6.35:nU8Qkzwo@4/Introducti...
Pre-calc: https://cnx.org/contents/_VPq4foj@6.57:vEOnJry_@2/Introducti...