ReachForgeNetwork has another great breakdown, this time focusing on the Titan. He goes over the key multiplayer components for the Titan Striker subclass in Destiny, and explains its close quarters combat strengths.
If you missed the Warlock Class Guide, click here to watch that next.
DattoDoesDestiny also has another level 15 subclass breakdown, and talks the Defender Titan. He goes over every skill and talent in detail, and discuss what talents will be the best (and worst) in each aspect of the game.
If you missed his Sunsinger Warlock breakdown, click here to watch that next.