Don't know where you are but here in the UK there is the boat
show">London Boat Show in January, but I myself always go to the International Boatshow in Southampton
. PSP Southampton Boat Show - Enjoy everything about boating in one giant show!
There are many others around the world, check out this site for details IFBSO
Word of advice
, make a list of what you actually, really need on board, these places can be a haven of temptation, like being a child in a sweet shop!
Most of all have fun and play with as many gadgets and go on as many boats as you can!