Besides a few metatags, most of the coding will be the same, unless the client has used special Front Page themes - which Dreamweaver will not recognize.
Best way to learn about coding, rather than having the program (whether FrontPage or Dreamweaver) do the thinking for you. That way, you can manipulate all of your elements in code view (or even my favorite, Notepad!) without software intervention. Visit http://www.w3schools.com/html/default.asp for a good introduction to html tags.