after finishing all the tutorial missions,
what missions is suitable for a beginner like me?

how do you suppose to play the game? as TC? or gunner?
in what view do you spend most of your playing? F9?
I am having difficulties in spotting the enemy,
how do you do it before the enemy hits you?
lots of times my tank is killed/damaged by something that I do not see.
what do I do wrong?

can someone please give me some tips?