There are ten playable races in TESV: Skyrim, the same ten races used in TESIII: Morrowind. There are a few changes between the races of the last three Elder Scrolls games, mostly on their powers and abilities. In Skyrim though, dragon-related abilities in addition to dragon shouts are present highlighting the game's theme about the dragons.
Races in Skyrim affect the gameplay in some way. Your character's race determines your initial skills, racial powers and abilities and starting spells. The NPCs also react differently to your character depending on his race. In the long run though, it is up to you to decide which path you would want to take and how you would build your character. Choose the race that appeals to you the most.
