Bretons are the human descendants whom hail from the province of High Rock. According to the Third Pocket Guide to the Empire, they have descended from the people of Nede and Aldmer. The Aldmer thought of making a superior race with their own "Elder", or "Superior", blood, by mating with other races. They are pure spell weavers and are advanced in all the Arcane arts. While lacking in physical skill, they make up for it in their ability to resist and cast spells that overwhelm most people. They are united in culture and language, but are divided politically. Their origins can be traced to the First Era of Tamriel's history, when the Aldmer intermingled extensively with the Nedic people. This mostly happened during the period in the first Era when Mer held Men as slaves, which lead to masters impregnating their female captives. Bretons are tall, dark haired, people. They are highly intelligent, willful, and have an outgoing personality. It is said that Bretons are weaned on magic, for it seems to suffuse their very being. Intermingling with Elven blood has given Bretons an affinity for magic, though hardiness is also part of their heritage. Breton culture operates under the Feudal system, and their society is agrarian and hierarchical.
Passionate, eccentric, poetic, flamboyant, intelligent, and willful, the Bretons feel an inborn, instinctive bond with the mercurial forces of magic and the supernatural. Many great sorcerers have come out of their home province of High Rock, and in addition to their quick and perceptive grasp of spellcraft, enchantment, and alchemy, even the humblest and least prominent Breton can boast a high resistance to destructive and dominating magical energies within their universe.
The main religion in High Rock is the worship of the Nine Divines, however some Bretons still worship the gods of their Elven ancestors.
I find the Bretons to be perfect for a beginner who wants to cast spells purely whereas the High Elves are more for the people who have a definite taste for certain skills in magic, the Bretons are more overly advanced in Conjuration magic which personally I find incredibly helpful over the course of the game.