If you belong to a gym, with real trainers, they can hook you up with everything you need to know. Most quality gyms have ex-pro or amateur fighters training or coaching in them.
If you don't have any amatuer experience you shouldn't enter at all. Also the tournament in Salt Lake City is only for fighters who have already won their regional/state GG championships. Fees are usually pretty affordable, but you have to have a registered trainer to work your corner.