Does anyone else on here like doing study courses?

I'm currently taking a course to refresh my calculus skills. It's fun!

I'm currently redoing a complex analysis course I did with the OU in 1993.  I still have all the course units.

For those of you whose maths skills are not very good, complex analysis is the calculus of imaginary numbers.

I started retaking the quantum field theory course I did at uni, since all the materials are online, but got stuck on one of the exercises because I couldn't remember how to integrate something. Calculus refresher is a pleasant diversion before I go back to it :)

I started retaking the quantum field theory course I did at uni, since all the materials are online, but got stuck on one of the exercises because I couldn't remember how to integrate something. Calculus refresher is a pleasant diversion before I go back to it :)

I only have two calculus books in my collection at home.

And several physics books.

I often get stuck on certain subjects and exercises.  It's a fact of life that some things are just plain difficult and it's not our fault if we don't understand it.  A way to get confidence back is to do a refresher course on something easier and pass it with flying colours.