This set of lectures covers the very basics of flavor physics and are aimed
to be an entry point to the subject. A lot of problems are provided in the hope
of making the manuscript a self study guide.Comment: 45 pages. Lectures given at the "2009 European School of High-Energy
Physics," Bautzen, Germany, June 14-27, 2009, and at the "Flavianet School on
Flavor Physics," Karlsruhe, Germany, September 7-18, 200