I can't describe to you how to attach the trailer... I do it all the time, our house trailer, the utility trailer, boat trailer and everytime it is never the same. I can say you make sure the little thingy is up that the things inside grab the ball properly, that your electric brakes and lights all work... cause if you are anything like me, and have a significant other that isn't handy you need to do these things yourself. Learning to back up as close as possible is awesome as is one of those wheels that goes on the end of your trailer to help move it around. I am sure someone will come along and explain it to you fully... but one thing to always remember... Hook the trailer up first... cause by the time you get everything packed, make sure everyone is ready to go, you are going to be frustrated and wanting to get out of there and if something just doesn't go right it gets terribly frustrating fast!
Hope you enjoy that boat once you get it... great thread, can't wait to see the answers that follow!