The lightning bolt is for the generator, at least it is on my 2011, hold it in the off position to prime generator then light should come on, on the button and press and hold in the on position until generator starts, mine has a beep when generator starts. The button with the sun and book is for map lights, mine has one above driver and passenger seats. The final one I am not sure could be fog lights. Below is a link to the Forest River Forum where they have a Georgetown section it is very helpful. Good Luck with your GT.
http://www.forestriverforums.com/forums/