THIS WILL BE A LONG POST!
I learned how to use the posing mode in 3DCG the hard way, that is, by constant trial and error. I haven't found a guide, so I'll try and help as much as I can with my hard-earned knowledge. There's also an english translation of part of the instructions online, search "3dcg instructions"
To move the camera around, you're going to need all 3 buttons on a mouse, that is, the left and right click buttons and the mouse wheel itself. Left click rotates the camera around a fixed, predefined middle of the scene, right click zooms in and out and the mouse wheels pans across the screen.
To change the position of the girls body part, you need to select a joint to manipulate; I personally use the 5 selections in the bottom left corner of the screen in posing mode. The 1st button shows the joints of the body , the 2nd one shows the hands, the 3rd the face, the 4th the hair and the 5th the skirt. Clicking the button and selecting the joint you want to pose will cause a blue wire frame sphere with a yellow dot in the center to appear at that joint.
Left clicking the blue sphere and moving the mouse rotates joint, and right click drags it around. All joints can be rotated, but certain joints cannot be dragged around. You can also manipulate the joints using the arrow keys. There are four different types of joint manipulation with the arrow keys; using ONLY the arrow keys and Shift + arrow keys rotate the joint, Ctrl + arrow keys and Ctrl + Shift + arrow keys drag the joint around. Note that manipulating joints using arrow keys is based on the direction the model is facing relative to the fixed, predefined center of the scene, so if you're going to make a pose and move it around, make the pose first, then move it.
When you first enter posing mode, you may notice the girl has a green wire frame inside her. Often times, this causes a considerable FPS drop, so to make it go away, simply hit space. Hitting space rotates between the wire frame, no wire frame, selecting the direction of the lighting (represented by a 3D yellow arrow), and having nothing display. You can also click a joint on that green wire frame to manipulate it.Post too long. Click here to view the full text.