Hi and Welcome to FF!
Everything is normal, don't worry, you'll get used to M3D, it's a bit weird at the beginning

:D
OK let's try to address your questions. I think it's just a matter of learning how it works.
There is no online documentation other than this forum! There is a readme file (OK, not very interesting) and some tutorials you can find on Google (they are mainly on Deviantart)
The version number is in the Internal tab on the right side of the main window.
The GeForce has probably nothing to do with your problems. M3D runs entirely on the CPU.
To navigate in the fractal, my advice is to use the 3D navigator, not the controls of the main window. Forget about trying to reconciliate and understand the numbers on the top right corner of the main window. Use your intuition in the 3D navigator rather. Forget about the commands at the lower left corner of the main window. Concentrate on the 3D navigator. Do not click on the main image, it will zoom strangely, that's not really what you want to do.
Color maps should work, please be more specific and provide steps to replicate. Textures: I don't know what you mean, there no texture feature per say in M3D.
Formula changes have no effect: please be specific, give examples and steps to replicate.
Good luck and have fun, and again, don't worry, the program works great, you just have to learn it
