canutethegreat

I need some major refresher on mathematics (all levels!) It has been about a decade since I was an undergrad and I don't use anything other than arithmetic at my current employer. So I need a refresher on most topics (the last math class I took was whatever the required calculus series was) and then something to help maintain the skill over time (i.e. daily practice.) I think even if I only do 15 minutes per day it will still be a significant improvement. I'm not sure what level to start at or if I should just pick random topics across the spectrum? I have a subscription to wolfram alpha (as well as the app on my phone). I can use that but I was hoping for something a bit more random on the problem generation.