Degas was a Parisian painter, sculptor and engraver. He is particularly famous for his paintings of dancers in which he captured their attitudes of both movement and repose. It wasn't only dancers he painted, however he also captured the daily life of people performing simple tasks.
There are many sites on the web, the ones below are a random selection.
Artchive (Degas section)
Artcyclopedia (Degas section)
WebMuseum, Paris (Degas section)