I'm a n00b to this game. Any helpful tips are welcomed.
Also, I play on PC
For general tips:
-When in doubt, switch characters. If you're getting destroyed by the opposing team, try another character. If you're not sure who to go for, ask your team what they need help with at the moment. If one of your teammates decides to be a dick, because how dare you not know everything about the game a few days after it came out, kindly remind them that youre just trying to help, because thats how you win in Overwatch. (Odds are, your other teammates will have your back on that one.)
-Communication can make all the difference in the world. When you let your teammates know what you're doing, it can turn the tides for outcome of the match. If the other team has you stuck at a chokepoint, suggest a coordinated assault or a specific strategy instead of individually banging your head against an impenetrable defensive wall.
-Go for the annoying ones first and be a team player. If you can identify the biggest threat, dont assume somebody else is gonna handle it. Switch characters and do your part instead of just hanging back and racking up kills.
-Don't be afraid to lose. Seriously. The spoils of defeat aren't terribly far removed from the spoils of victory. Overwatch is designed to enable those sorts kick-ass moments, so dont lose hope just because things arent going your way.