What is good Formation?

[Spyros]

Welcome aboard bro.

For starters you may go with 4-4-2 which lacks the attacking punch, but brings a nice defense and middle line on the table. This is a general purpose formation however it is consider a bit conservative by many.
Then another simple formation is 3-5-2. You lose some defense in exchange for better middle control.

Wait a minute! Its not working like this. You have to choose the formation, not the other way around.

You need to examine your players. What positions do they cover? how many defenders you got, what is their quality, do you have a player with a nice special ability, etc.

Check your roster, make a slight evaluation on who will play and who will stay on the bench. Now it is time to check forum at tutorials & guides section. There are some excellent formation guides that you should take into consideration and pick the one that fits your team the most.