The problem with "easy" web-design programs is that they're not really worth the money or effort to learn. Dreamweaver is not that great of a program anyway, and it produces sloppy and sometimes incompatible HTML (that is, it doesn't display correctly on all major browsers).
If you go to http://www.w3schools.com/default.asp , they have free step-by-step tutorials on pretty much any and all technical web skills. It also might help to take a web-design class.
Whatever you do, don't forget to apply the skills you've learned as a graphic designer: typography, layout, composition, hierarchy, etc. High quality web design is just as difficult as high quality print design. Good luck.