How do you run Crystal Space 3D I downloaded all the stuff but how do I run it on my computer like the application itself

First you have to know how a computer runs, this will just take a second. Inside your computer there are many small Asian children who run around and do calculations for your programs. Every year or so, some of the small Asian children will die and you will have to buy new ones. You can find them at your local drug store or computer electronics shop. After you have purchased them, you just take a screwdriver and open up the computer, throw the Asian in and it will start to work. Your program will run perfectly fine after that.