Investor Help (NO Ihub questions)

[rooster7]

Newbie has questions. (If there's a more appropriate forum, pls let me know). I'm paper trading: How do I incorporate a trailing stop in my stock purchase? How do I know what the "Charges" are for my buys? Regarding cost per share, would that be the "last sale" amount I found when I went to my stock on Nasdaq, or is it another figure? Is the "Stop Loss" column of the portfolio similar to a trailing stop; that is, is that the price at which I want my shares sold because it is unacceptably low?
General q's: What's a hedge fund/contract? What does "costless collar" mean? What does it mean to "short" a stock? What's a "put" option?
Thanks to whoever has the answers and the patience!