Q. Are you trolling?
1. STEAMID is your global steam id that is unique, to get this ID you type "status" in console, and your steamid is displayed next to your name in the format of: STEAM_0:0:00000000 etc etc.
2. Servers, as in your favourite server(s) / server types, i.e - Zombie,Deathrun,Minigame,Jailbreak,WCS etc etc.
2. Amitiel wrote that because, your application didn't really give any information other than you like substick, and you're new to the game.
Please refill the application, with the steamid and try to give as much info as possible, Good luck with the application.