I realize you are only a HS senior, but did you put any effort into your research? Google is your friend for most of the answers you desire, and the use of spell-check and proof-reading are also helpful (you are getting ready to go to Purdue, after all).
Most of us were able to find all of these answers before Al Gore even invented the internet. Just a technique, but the amount of effort you put into your research and questions betray the seriousness of your desire.