Can't upvote this enough; it's a great podcast. If this seems just a little too esoteric, might I appeal to everybody's prurient side and recommend Chaucer's Vulgar Tongue [0] as a gateway episode?
Oh wow, I've never seen anyone rep that podcast elsewhere, but I highly recommend it. It's absolutely fascinating. I'm not much of a podcast listener, but this one pretty much immediately captured my attention and has held it (I'm now a ~70 episodes in IIRC).
A a great podcast that has started a personal hobby/interest in linguistics and etymology.
I love that history is able break your notion of what is or isn't possible and this podcast is great at that; it repeatedly shows how no language is set in stone, it is a human construct, and how languages are interrelated.
Please don’t recommend that book. Bill Bryson has no training in linguistics and that book is so bad, that there is a factual error on virtually every page.