and some quick tips
-if you play pyro extinguish your teammates by air blasting them (right click)
-if you have good timing with it you can kill a soldier with a reflected missle.(also works on sentry guns)
- uber medic + teammate about to cap a point? get in between em and air blast the medic
- as a spy, they can hear you uncloak. do it somewhere safe.
- demoman (best class imo) put those sticky bombs around corners and in blind spots.
- as a medic heal EVERYONE, can't say that enough. sticking behind a heavy won't help your team at all. share the health.
for general setting's make sure you have it ring everytime you connect with a hit. Makes it 10x easier to know you are connecting.
Launch options: to avoid that whole bald headed guy intro, go into properties-Launch options. Type "-novid" and it will skip that whole part.
"-fullscreen" or "-full"
There are many other options. look around to find what you need.
all i can think of for now.