There's nothing to it, and no writeup necessary. The thermostat is in its own housing over the transmission. It's illustrated here as 16331A:
There are writeups around for the fill procedure. The important thing is that you find the procedure and follow it exactly. All air must be bled from the system, using the correct procedure, for the engine to run properly and safely. There are no shortcuts - PERIOD.
One other point - you'll definitely want to use an OEM Toyota thermostat. Parts store replicas (Stant, etc) simply are not made as well and do no operate nearly as reliably or consistently, and it
does make a difference in how the car runs and how long it lasts. Everyone disregards this advice the first time, but it's true, so you may as well stat with the right part the first time.