The article below is just a basic introduction to the topic. For something more advanced, written by pros and a fantastic leveling guide, my recommendation would be this Elder Scrolls Online Leveling Guide. I could not find any other guide that comes even close in terms of the impact it had on me.
The Nords are the leading race within the unstable Ebonheart Pact.
With a deep history with the Dunmers, the Nords are an arrogant race propelled by the need to conquer and expand their empire across Tamriel. They conquered many regions successfully such as Morrowind and almost drove the Altmer out of their homeland. They are known for invading the Dunmers home land many times as well. Due to their successful military campaigns, the Nords lay claim the title to rule Tamriel, regardless of the king they serve. They see other races as weak, disorganized and do not contain the ability to rule Tamriel with an iron fist.
Nords are natural born warriors driven to achieve victory by any means necessary. They are a temperamental race as they are easily subjected to anger but in the same time, they are extremely boisterous of their status. Even so, the Nords are extremely well gifted warriors which implant fear into their enemies who dare to cross them the wrong way.