I've helped with a couple of them... enough that I'll feel confident doing my own when the time comes...

You'll definitely want a harmonic balancer puller (and you need these specific loooong 10mm bolts to make it work)... trying to get it off with pry bars and the like is a good way to break the thing (it's brittle).

There's a whole bunch of stuff you should replace while you're in there... definitely get a new timing belt tensioner, thermostat, camshaft oil seals etc (see kit HERE )