Equal Rites

Like, you've got, you've got the, the first couple being, like, the wizard who, like, should be a world-saving hero, only he's a coward.

And then, you know, you've got Equal Rites, which is, um, the first book that introduces the witches, so you're kind of satirizing that, like, um, I don't know, w- for lack of a better word, witchier side of, of fantasy.

Hmm.

Um, and then, uh, several books in you have Guards! Guards!, which, um, introduces possibly Pratchett's, like, best...

I-

...

Equal Rites and just call that the beginning.

You could, you could very easily skip to Equal Rites as long as you understand what he built in the first two.