Introduction To Algebra
https://www.edx.org/course/introduction-algebra-schoolyourself-algebrax-1
I hated maths at school, but the further I get into synth DIY I’ve released how important they can be, and actually they’re kind-of fun when you have a purpose for them. I hated seeing the maths involved and not fully understanding what was happening, so I took this online course and I can say it’s brought me up to speed This EdX course is a nice little (re)introduction to Algebra, and if you’re not up to scratch with your maths, I’d fully recommend it.