The Aeronautical Information Manual (AIM) section of the FAA's FAR/AIM has basic information on ATC procedures. When you go to the academy, they will most likely be giving you the FAR/AIM to study as part of your training.
But until then, here's a copy online: http://www.faa.gov/air_traffic/publications/atpubs/aim/
Chapter 4, Section 2 is what you're looking for.
As far as the second part of your question, I have no idea what you're trying to ask. Could you elaborate?