Just so you know, I started reading the CAP series with the first...which I found a bit boring...so I let it go. Then, after reading Be Rad!, and following a couple of those stories, I went back to CAP and read the series up to Be Rad!, before he came out with The Box. I actually found that I did enjoy them all, immensely, and if you don't read them, then some of the storyline is filled with holes around what happened in their past.
Start with Chronicles of an Academic Predator, and read them in order--and keep a box of tissues handy!