'm looking for tutorials, to create all kind of shoes... i dont know any universal "shoe making" tutorial, but keep on looking. You will find the answer by urself. but how do i cut meshes with curves? You dont cut mesh with curve. You cut patchs(nurbs surface) with curves. After selecting a curve and a surface, go to Surface menu set. Edit NURBS > Project Curve on Surface. The surface will be cut by the curve. Then, select the surface again. Goto Edit NURBS > Trim Tool. Select the part of the surface(you will see blue point appearing after clicking) which you want to keep and then press enter. For Boolean: Create two objects, a circle and a cylinder(whatever), then goto Edit NURBS > Booleans.Test different combination(circle first, cylinder second or cylinder first, circle second) of selection and check what they do.There will be total 6 combinations for 2 object. I think, you should spend some more time on practicing different tools before actually trying to make something.