The Basics
I know this may not apply to everyone, but I have seen too many people who don't know what they are doing out there. If you find yourself constantly being kicked out of rooms then you may need to read the material below.
1. THROUGH PASS
It still amazes me how some people still don't have this skill... THIS IS THE MOST IMPORTANT SKILL IN THE GAME. This skill should take up the first slot for every one of your characters and it should NEVER be taken off.
2. ROTATE
This is one of the reasons I hate playing with new people in FSB. They don't know how to rotate when the play starts. You DO NOT run straight towards the player opposite of you at the start of every play. (well... sometimes you do but not everytime). Look at the how the players are lined up at the start of every play to determine who you are supposed to cover. The other team's rebounder is the focal point for your rotation. If you are lined up infront of the other team's rebounder, you get the person that is left or right of him/her. I also hate how people want to cover their own position even if the situation says otherwise. You get the person closet to you that is not the rebounder, even if that means a G is covering a F or otherwise. If you are your team's rebounder then you do the same thing on every play, which is, GET THE OTHER TEAM'S REBOUNDER. Incase you didn't understand what I typed above then maybe this diagram will help you out:
3. DON'T CHASE THE BALL
This is a man to man defensive game. If you leave your person to go chase the ball around then you will be leaving one person on the other team WIDE OPEN. This mean you FOLLOW your man around like a stalker. Wherever he/she goes, you should be one step behind them. There are a few exceptions on when you should leave your man to go help out, such as: your other player got broken by a juke, he/she fell down, or he/she jumped at a pump fake. I'll let your team decide on how to help out when these situations happen.
4. KNOW WHEN TO TYPE & WHEN NOT TO TYPE
Whenever you miss a shot, get blocked, did a frogger, etc... I don't want you to stop and type some stupid crap like: "OMG, BS!!!" , "HACKERS!!" , "LAGGED!!". No one is perfect in this game. So whenever you make a mistake, immediately get back on defense or try to look for a better opportunity. I don't know how many times I have played with someone who loves to type after every mistake he/she makes, and that leaves the other team player wide open.
5. NEVER EXPECT EVERYTHING TO GO ACCORDING TO PLAN
So many people have the tendency to just stand there after they do something expecting someone to give them the ball again. For example, many guards likes to stand still and not get back on defense after they shoot the ball. They expect their rebounder to get every missed ball and pass back to them. Even the best rebounder will sometime miss a bounce and when that happens, the other team will have a wide open person because the G is just standing in the corner waiting for the ball. The point I'm trying to make is to IMMEDIATELY get back on defense after you do anything. Always know what is happening on the court.
6. DON'T BE AN ASS
I know this may be a hard thing for some people... but try it out, you'll find people will like you more. Who here hates playing with someone, who whenever they don't have the ball, will spam S for "PASS!"? If you find that annoying, then why do it? Be patient, this is a team game. Also, don't be one of those people that every other word that comes out of their mouth is a cussed word. I hate playing with someone that cares more about talking trash to the other team rather than playing the actual game. Funny enough, the people who do this kind of stuff also falls under the category of people who don't follow rule #4 above.
7. PASS
No one likes a ball hog. So pass the ball around to your teammates. You'll be surprised to see how many of them are open. Don't get a ball hog confused with a scorer. A scorer knows how to put points on the board and their team's offense will flow through them. Most scorers will pass the ball out of the doubled/tripled team to their open teammates. A ball hog will take shots no matter how many people are on them. Usually a ball hog will get blocked 75% of the time. Many ball hogs also break rule #4 & #6 from above. Are you surprised? HAHA.
8. LEARN & KNOW YOUR OPPONENT
If you play with a scorer that never shoots in your face, then why do you keep jumping at his/her pump fakes? IMO, it should take around 3-4 plays to read a person's style of play. This rule might be the hardest one for people to master. (Many experienced FSB players still have trouble with this rule) If you learn how the other person play then you can disrupt their game and take them out of their comfort zone.