Breton is one out of the ten playable races in the Elder Scrolls Online. You can find a full list of all the races here.

The racial skills of the Bretons reflect their affinity for the arcane, increasing their base magicka, magicka recovery, light armor, alliance point gain, spell resistance, and cost reduction of spells, allowing them to cast spells with little pause.

Below you can see the racial passives that you benefit from when you select Breton as your race.