Hi, I'm an undergrad in EE who wants to learn the basics of solving PDEs (and Fourier series/transforms), but who has some learning disabilities (developmental, most notably). Before I get criticism for what I'm about to say (which will be asking for an alternative to the obligatory "read this textbook" response), I'll give some background: In high school, I was a mediocre math student. After being out of school for a considerable length of time, I had some strange neurological experience that wouldn't make sense to many I were to describe it to (a seizure, perhaps? hallucination without substances?) and decided I wanted to focus on mathematics, again. I watched all of the calc series on single and multivariable calculus from MIT's playlist and resumed school as an engineering student, having received straight As since. However, the real strategy to how I learned differently was visualization. I never relied on textbooks, never did anything merely procedurally without questioning, and could not rely on anything that did not make physical sense, nor could I do well on any concept (equations, formulas, etc.) unless I could understand it enough to derive it on my own. That said, I consider myself to be all but functionally illiterate. I consider textbooks useless if they don't show you entirely how to do every sort of problem that could show up. I prefer videos, learning directly from people, and building intuition. So, are there any sources appropriate given what I described?