re: I'm downloading Dragon Age: Inquisition. About to play for the first time.

Do you like Bioware?
Do you like the fantasy-middle agey type setting (LOTR/GoT)

Idk if you've played any of the other DA games but the lore is pretty in depth and interesting. I played DA:I without playing 1 or 2 and enjoyed it. Kotaku did a pretty good write up on the lore for people who jumped into the series with DA:I LINK

There is also a thing called dragon age keep you can do where you can make all the choices you were presented with in 1 and 2. It's a little overwhelming if you've never played the first two but I found it was a good supplement to the Kotaku write up. You can probably find a guide online that would walk you through what each choice would impact