I assume you are talking about 70-019, DW for 7.0. I personnally would not spend time studying for this as it will surely go away with Yukon being released later this year. As far as DW---If you want to learn AS then I agree with John, if you want to learn data warehousing, buy Ralph Kimball's data warehouse toolkit book, here is a link to some of Kimball's articles.

http://www.ralphkimball.com/html/articles.html

HTH