Pyro's right click counters every class.

make sure to enable console in the advanced keyboard settings so i can tell you to input all kindsa things while you're playing to make your game as optimal as possible

Do you mean getting good at a pub or good at comp? Because a pub is easy to learn comp will take more then a few weeks

http://teamfortress.tv/thread/18387/newbie-mixes

expanding on this, here are some good commands:

- fov_desired 90
tf2's default fov is shitty and low, this is the maximum fov allowed.

- r_drawviewmodel 0
use this to hide weapon models so you can shoot easier, OR

- viewmodel_fov 90
increase the viewmodel fov so it takes up less space on most weapons (setting this to 0 removes tracers and hides the weapon)

Are you coming from a place of complete ignorance? (I dont mean this in a negative way)

Because the difference between the conversations "how can I start to play TF2" and "how do I get good at TF2" are pretty significant.

That's cool. You could pub for two hours and then end the night with newbie mixes.

You can hold m2 and press m1 repeatedly to spam sticky bombs at medium range
autoreload in advanced settings

first off, welcome to TFTV, the home of competitive TF2. I'm alosec, an IMish level medic. I'm gonna assume that when you say you've got the basics of the game, you mean you've played in pubs and understand the different gametypes (koth, 5cp, pl), and have no experience playing 6s or HL. so that's where I'll start.

The basics of 6v6 TF2

Competitive TF2 is very different from public play. In your average pub, there are 12 players on each team, and there is generally very little structure involved in how the game is played. In 6s, there are only 6 players per team instead of 12, and classes are limited to 2 scouts, 2 soldiers 2 pyros, 1 demoman, 1 heavy, 1 engy, 1 medic, 2 snipers, and 2 spies.

Classes are broken down into two groups: "cookie-cutter" classes (sometimes called "DM" classes), and "utility" classes. The cookie-cutter classes are usually what's ran at any point in the game. 2 scouts, 2 soldiers, 1 demo, and 1 medic. The utility classes are the rest of the classes, pyro, heavy, engy, sniper, and spy. These classes are only used when the team wants to use that classes abilities for a specific purpose where the cookie-cutter class would be of less benefit than the utility class. A good example is swapping a scout for a heavy when holding last because the heavy is a big boy who can tank more damage for your team.

So we have our main 6. Scouts, sollies, demo and medic. One soldier plays the role of the pocket, who stays with the medic and generally leads the combo. The other soldier plays the roamer and typically controls the flank (and in turn, the universe).

The class restrictions change the meta into a much more regulated, standard, and skill-based game. Most of the game revolves around the uber percentages of each team, and the amount of players alive for each team. A good video to watch to learn about how pushing in 6v6 works is this video by Marxist covering medic play, and this other video also by Marxist covering pushing.

Great resources covering 6v6 play:
MediMarx's entire youtube channel, specifically his playlists concerning general 6v6 play and his basic map guides.
YouMustMike reviews player-submitted demos, watching some would give you a good idea of how 6v6 is played and how you can apply it to your play.
The Resources section on the NA 6v6 Newbie Mixes steam group page also has a ton of awesome information that will help you get started.

Speaking of NA 6v6 Newbie Mixes, they are happening tonight, and they are a fantastic way to get into the game. Experienced coaches come in and help teach new players how to play 6v6. You could play it tonight, they start in 45 minutes from the posting of this reply (9 eastern).