HOW DO I MAKE AN INTRO LIKE THIS? AT 0:11

If done in Motion, you would make a rectangle and than make an emitter out of that particle. You would put a light in the scene because there was dark and light areas. then try to randomize the spin and wind and gravity as much as possible.

If done in a program I use called Cinema 4D, its pretty much the same. make a flat rectangle, turn it into particles. have them emit in the direction you want with a light in the scene and maybe some specular. then make it spin and change the angles and randomize the speed.

there is a little more you would need to play with it, but thats the jest.