I... I'm not even certain, to be honest! Everyone seemed to love them so much, so I took them out of the library and read So You Want to Be a Wizard, and then Deep Wizardry, and then I think I made a start on High Wizardry before giving up. I just got... bored, and a little confused, and, IDK, something about the style of the writing just rubbed me the wrong way. I'd probably have to re-read a few chapters to articulate what, exactly, it was that bothered me.