If you are using Disney transporation, from your resort take the bus to DHS. Do not enter the park but over to the right you will see a boat that goes to Epcot via the Boardwalk, Swan/Dolphin and then your stop, the Yacht & Beach resort.
I think that is the fastest way from CBR. I think officially they tell you to go through DTD to travel from resort to resort but I find that the slowest way.
If you happen to be at AK or MK first, simply take they bus to the Y&B resort. If you are in Epcot, you have to make your way back into world showcase to catch the boat outside of the UK.
Then again, maybe ROBO will post one of his wonderful maps & it will be easier to see.