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.
Hailing from the Black Marsh, the Argonian is a playable race in The Elder Scrolls Online which are aligned to the unstable and fragile, Ebonheart Pact. First appearances label the Argonian to contain lizard ancestry due to their additional bumps, horns and spikes. Bipedal in nature, they are masters of stealth (mastering in guerrilla-style warfare), slipping in and out of shadows upon a moment’s notice. Coupling with their ability to be unseen, the Argonian are well versed in using blades (single and double handed blades) to deal swift, deadly attacks before slipping back into the shadows. However, not all Argonians practice the art of stealth; many Argonians have taken up learning the use of magic. Although their magical energy is not as powerful as the Altmers, the Argonians are well-versed enough to hold their ground in a one-on-one fight before switching out to using deadly blades to the end the battle on a whim’s notice. Swift and secretive, they serve as scouts and skirmishers for the Pact.