First off, welcome to the Dis! Getting around the World is pretty easy. The amount of time it takes depends on where you're going. Just so you know, you don't have to go from the park back to your resort to go to another park. You can hop from park to park. Depending on where you're going you may have to get there via the ticket and transportation center. I would say a good rule of thumb is to plan on 30 minutes. This takes into account the time you may have to wait for a bus/monorail and the number of stops you will have to make. If I remember correctly, you should get a transportation pamphlet which will help you figure it all out. Good luck and have fun!!
WDW:Offsite '85
Offsite '90
Offsite '96
DI '00
DI '01
S/D Nov. '01 (tentative)
DL: '00