So luckily I've made great connections throughout the years and have basically moved from job to job without having a real interview.

I recently did a few real interviews just for the fun of it and realized how far I was behind in my CS fundamentals. I excel at my specific domains/languages I use but don't necessarily practice CS fundamentals at all in my day to day.

I picked up Cracking the Coding interview to try and brush up on my skills but have realized that I am way behind in the math department. The first few pages threw me for a loop so bad that I haven't picked it back up.

All the online courses all seem to assume you have the math skills already down and do not go into what/how/why.

I beg of you HN, where should I go to learn the prerequisite math for pursuing a more CS fundamental skill? (For clarity the type of questions I failed in my interviews were around datastructures/design (ie: LRU Cache), Graph Problems, Memory/Time complexity).

Thanks! <3