None. I'm computer illiterate.

Little. I can use a computer, but I can't use most programs to their full extend.

Average. I know my way around my computer, but I don't know exactly how it all works.

Lots. I can use all of my programs and help others, too.

Tons. I'm a master with my applications and I've dabbled in programming, too.

I am a professional programmer and/or my job uses advanced computer applications daily. I have years of experience.