god - where do i start ?????
theres so much in forge.
i would start by taking a track you imported , hilite a piece of the track.
then experiment with the different effects using preview to give you an idea of each built in effects feature. there are tons of parameters to explore.
also learn the noise reduction feature. imho its very usefull.
if you want an explanation just ask.
really - it could take a 50 page book to describe the features.!!!!