Electronic Design Software

hey what is the best web site that has schematics for simple electronic projects?

How do basic electronic components work Like transistors capacitors and resistors? Hi im allen i am 12 years old and ive been working with basic robotics for about a year but im still puzzled by what the components do mostly i have just used schematics but i want an idea about the components so i can design my own projects other then simple dc motors, so please answer quickly!