For the show, the beginning of the 2005 revival is probably a good place to start! The first couple of seasons are probably a bit dated now but still good, and they treat it as kind of a soft reboot because it had had been off the air for ~15 years at that point so it’s designed for new viewers to drop in without having to know all the backstory and stuff.

As for the books I have no idea lol. There are quite a lot of those IIRC.