Question of a newbie

[Medo zalata]

1) when you go to your squad, you'll find 2 unsigned 18yo players. One 2* with 0T and the other one 4* for about 18T.
2)yes. You can see this in the player's skills section. You need to improve your players or buy other players.
3) don't use high press and man marking if you want to lose less condition.

[Medo zalata]

Also I recommend reading as many tutorials as you can. You will learn a lot about the game from them.