you have to be pretty good with ActionScript in order to create games. there are tons of online tutorials, but if you're willing to invest a little more, go to a bookstore or Amazon and buy yourself a good Flash guide.
as for designing a website in Flash... do you mean an interactive interface...? if you know how to do movies, buttons, and preloaders, just integrate your knowledge and make some nice graphics with Photoshop (or similar). import them into flash and set up your interface like a movie. use actionscript commands to operate buttons to take you to other scenes. i guess it's sort of odd to explain so simply, but if you think it through logically and play with it, it's not a difficult thing to do.
it's good to keep in mind that there is such a thing as Flash overload though... sometimes simplicity is better. best of luck!
Edited by kidavi, 15 September 2005 - 10:19 AM.