Particle Barrier
Cooldown: 11 seconds (2 charges)
Create a damage barrier around you.
Projected Barrier
Cooldown: 9 seconds (2 charges)
Create a damage barrier around an ally.
Graviton Surge (Ultimate)
Needs to be charged
Launch a gravity well that pulls enemies to it.
In case the video won't load here's the external link.
A Guide for the Hero Zarya from Overwatch
The narrator talks about the hero generally then summarizies it's abilities and how you can use the effectively in the most precise but shortest way. In the background there are clips from the game, possibly it's the narrator's gameplay. He talks about against which heroes can and can't be this specific hero be used.