They have been answered. Just search for manual of air traffic services on google and it will be the first or second result. You download a pdf file. Have a look through the general section, dont worry about anything in there to much. It wont make sense outside the lesson/simulator environment. Stay away from VATSIM or anything like that, there were two vatsim fans on my course, both failed. In my experience you fail if you simply dont have the dedication and motivation. Obviously ability but other than that you get out what you put in. Work hard everyday and most nights and then get pissed as a fart on friday night. Keep your head down in college, dont get known for the wrong reasons, smile and nod when you get cross instruction or disagree with an instructor. Good luck.