What solar panel type to power a conventional typical light bulb?

I built a shed out back and I would like to install a solar panel to power a small light inside and outside of the shed. Or maybe just the inside. Does anyone have any advice and suggestions?
Update: I'm confused now
Update 2: Well, i plan on just using it when i go out to the shed and need a little light on to see inside at night.

Wow, so many great answers!
9 answers 9