In Addition to Thaumaturges Tutorial, you should also take a look at the manual which has all the necessary basic information you’d need to create whatever game you intend to make.
You may also be interested in those forum posts which
give you a fully working character controller with extensive third person camera
a collection of code snippets including scripts for various camera systems including third person ones
And of course my Panda3D book even though it doesn’t has a third person camera for a single character, it does describe how to work with the camera which is basically the same for any camera type you’d like to implement. And you may find other parts of it useful for other parts of your game.