What is Reddit's opinion of Relativity in Illustrations?
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No prob!

>I wish I had chosen a different career path so I might actually understand the mathematics behind them.

The math behind general relativity can be pretty daunting, but to understand the math behind most special relativity problems usually only requires some algebra and a little geometry (and because its very geometric, it lends itself well to visual depictions of the problems). If you're okay with those two things, you should be able to understand a lot of the math of SR already!

There are a lot of good books that cover the math in a way that a non-specialist can understand. Here's one that illustrates everything out that I like.

It's also not very mathematical, but Einstein's own book for the general public on Relativity remains one of the clearest descriptions of the underlying logic I've ever read.