You will find that it is really quite easy to get around at WDW. The one thing to remember is that you can not go from resort to resort on one bus. You will have to get to a park, or DTD, and then transfer to the appropriate resort bus.
So, for you to get to the GF, you can take the bus from your resort to MK. Then, either take the resort monorail from MK to the GF. This will take you about 25 mins total. It will make 3 stops before yours. Or you can take the boat from the main boat dock at the MK. The GF shares a boat with the Polynesian. It will stop at the GF first, then head to the Polynesian. Both are great ways to get to the GF.