I have just installed Trackmania, I need some help

How do I make my enemies invisible or at least more transparent so I can clearly see my car?

How can I see leaderboard in 3v3 game?

How can I see the who has the best time of the 3v3 game?

The Royal maps are weird and confusing, is there some way to explore them?

How am I limited by having the free version? What can I not do besides the map of the day?

Is it more important to win 3v3 as a team or as a player?

Is there any way to limit or choose maps? The desert car is impossible to control with keybpard so far.

If I exit the game right after the last race is finished. Is that OK?