Hey there this is just an article intended to help beginner Medics get into 6v6 and flourish.
Firstly, you’ll have to decide on a good sensitivity. I would greatly recommend disabling mouse acceleration for Medic as it will make airstrafing much easier. For PC players go into your control panel run mouse options and go to the pointer options tab and deselect enhance pointer precision. The next task for you is to find a sensitivity where you can comfortably look around while at the same time you are able to turn 180 degrees quickly and easily every two seconds. This will be important in holds and in general can be applied in spam fights as well.
The next thing you should concern yourself with is your autocall option. Basically autocall will cause your teammates to automatically call out for Medic when they reach or go below a specified percentage of health. Go into advanced options under the multiplayer tab and adjust your autocall. I don’t use this option because I generally have a good gamesense and I find it clutters the screen with useless calls. For example if someone is going to do an impulsive push they’re probably smashing their Medic key. I can react more quickly to their decisions that way. At any rate I wouldn’t raise the percentage higher than 50%.
That’s pretty much all for Medic settings. As long as you have your net settings fine then you’re pretty much off to a good start. m0re’s FPS config has very good net settings and reduced graphics that many people enjoy. Stay tuned for more.

Watch this ex-medic bust out all his old tips and tricks
I wrote something up earlier too, but look for Mike’s series of posts to be more indepth and technical than mine:
http://www.orztf2.com/2010/05/20/medic/
And my nerd essay when I was but a wee medic LOL
http://www.orztf2.com/2010/02/25/why-play-medic/