The info below is a bit out of date as it refers to the beta. If you happen to be looking for an up-to-date reference for your Dragonknight, I suggest this eso guide . It includes some killer advice on leveling up, builds, skill rotation, and gold farming.
The Elder Scrolls Online, the latest addition of the Elder Scrolls series, is trying to innovate a new class system that may change the MMO world ever. Refer to the game director, Matt Firor, weapons, gears, armors, and so on will not limit to a specific class anymore. It means that both Dragonknight and Sorcerer can suit up a heavy armor and shield alike.
Player could be able to dress up their beloved characters to whatever they want. This method of thinking tears apart the idea of traditional MMO severely. Moreover, ESO allows player to level up any kinds of weapons to gain both new skills and efficiency. Of cause, weapon skills will be changed based on a weapon holding in player hands.
With this new class system, there is no specific role for each class like previous MMORPGs. TESO offers players with a freedom of their choices to create a character of their owns. Spending a lot of points in increasing health bar will turn a character into a tanker even it is a sorcerer. In summary, gameplay in the Elder Scrolls Online is in accordance with player decision in adding skill points.
The info above is a bit out of date as it refers to the beta. If you happen to be looking for an up-to-date reference for your Dragonknight, I suggest this walkthrough . It includes some killer advice on leveling up, builds, skill rotation, and gold farming.