Hello, FTH! I'd be happy to help! If you would like to give frubals to another member (usually this is done when you enjoy another persons post) then there's a link up toward the upper, right-hand corner of their post. Simply click on it and a small pop-up will appear. In it, you are given the option to write a message to the other poster, perhaps explaining why you are giving the frubals ("I agreed with your comment", "I liked the way you put that", that sort of thing.) Because the person recieving the frubals won't know who it is coming from otherwise, I like to sign my name or an abbreviation of it toward the end of it.
You can check out who you've given frubals to by following the "User CP" link toward the top of your screen. This will also show you who has recently given you frubals.
Please let me know if you've got any questions on any other topics! I may not know the answer, but I'd love to find out with you!