Well, I have only one question at the moment, I just thought if others have questions, too, they can use this thread before everyone starts a new one for each little question.

OKay, my question: What is the easiest way to mirror a pose? Meaning: I want to make a picture with two V4s in it and I want to have it symmetric, meaning both of them should be posed thee same way, but mirrored.

Use the Symmetry command in the parameter palette options menu - the triangle button at top right of the palette. If you want to mirror the whole pose select

Root in the Nodes pop-up
Recursive in the propagation pop-up
Swap left and right in the Direction pop-up
Mirror Y/Z rortations in the trunk nodes pop-up

and click Accept.

 Hmm, I see the little triangle, but not those popups.

Symmetry is about half-way down the menu that should appear when you click the button.

 okay, I'll try it. Thank you!