First of all, welcome to DisneyCentral.
Is your transfer through Mears or the new Disney Magical Express? If you have a transfer through Mears I would suggest you change it over to the new service. It's free and sounds great. You will get special luggage tags and you won't have to touch your luggage once you check it until it gets to your resort room.
Look at this page, it has all the information you need about Disney's Magical Express.
http://disneymeetings.disney.go.com/...etailPage#C4Q4
If you don't have a guide book yet I suggest you get the Unofficial Guide--it's great. Passporter is also a very popular guide book. Expect large crowds when you go in June. If you read as much as you can before you go you can still have a great trip no matter how crowded the parks are. We always go in the summer and don't have a problem dealing with the crowds.