Now that Dragonborn has been released I was hoping if maybe someone could tell me how this shout specifically works like how do you get it and how long does it last. Any info would be much appreciated!

I might not be able to provide the greatest amount of info, but I will provide what little I have.

It is a shout that you learn from word walls. it has a relatively fast cooldown time, and you can only use it once per day.

I only have the first word of the shout, but it lasts at least 300 seconds (5 minutes), and the first word from the shout increases your armor rating by +25 and the damage you deal from power attacks by 25%.

that's all i have for now

Plus, when you enable the shout during a battle, if your health goes below 50%, an ancient dragonborn come out and helps you fight.

How does it effect shouts themselves?

with just the first shout? cuz i've died and no dragon born has came to save my beautiful cheeks. I have a question for you actually, do the words for the dragon aspect shout require you to go through the main quest at all? other then the first word. Because I would like to keep this going as long as possible, but still want to get all 3 words

Where's the third word?

Thank you for the info I appreciate it greatly! One last question if anyone knows, does the shout increase the power of your other shouts?