Perspective Basics

I didnt know such a method or theory or whatever you call it existed. actually when i drew something this happened at an unconsious level. but knowning this theory the finish and quality of the drawings can be greatly increased.

Usually there's 1 perspective, 2 perspective and 3 perspective. usuallly coz there's 3 dimentions. but the number is limitless.

http://www.olejarz.com/arted/perspective/
http://www.khulsey.com/perspective_basics.html
http://www.termespheres.com/perspective.html