1) Have a Goal. You need to have a primary goal determined at least 3 months before the tradeshow is being held. That goal will provide you with a focused thought process and eventually help you take significant decisions.
2) Present and Promote. Schedule presentations for vendors and promote your tradeshow by sending emails or brochures to necessary people. You can even set up meetings to announce the official date.
3) Interact and Follow Up! It is extremely important to interact with as many attendees as possible and follow up with significant ones immediately. Attendees are usually bombarded with many presentations at tradeshows, so it is important to remind them about you the next day itself because there is a 99% chance that they might have forgotten about you.
Tradeshows are ideal occasions to generate brand awareness and eventually enhance your business; so make the most out of it!