I thought it was an interesting book. I particularly enjoyed the bit about the tennis player who won all the tournaments because he would bring a loaded gun to every match and threaten to shoot himself in the head if he lost. I liked how all the separate plots converged.
I read it several years ago and didn’t take any notes or anything, so it’s probably something I should re-read. I’ve read more difficult books, but there is just so much going on in infinite jest, that it’s hard to remember everything.