HI GUITTA . . . 8^) How are you, fine I hope? Yes, ZBrush is a very difficult program to learn! But, once learned it's probably the best organic modeler on the market, for the price. You push & pull / add to & subtract from / twist etc., as you would with a ball of clay, all in real time. It is great for modeling human or animal models, & it can also do standard modeling as well. Once your modeling is completed, you can then apply materials / textures / & paint on your model, again, all in real time. A new version is due out very soon, I'm kinda anxious to see what new features it's going to have, as it still needs some added features, IMHO. SO MANY PROGRAMS to choose from, a person can become very dizzy, just trying to decide. Ha ha ha. Have a good one . . . Mark. ;^)