Are there any Free, easy to use programs (and I do not mean "Free trial") that can do Modeling? I and to get into Modding a bit, and Modeling I think would be a great start. Also any good tutorials for mapping? I'm new to modifying completely, and I have an awesome Idea for this multiplayer zombie shooter (like Left 4 Dead, but you have a huge free roam city map) that I'll make one day.