There's a guy on ld4all who makes these courses. Doesnt get mentioned around here but one of his guides is using a constant dream environment. The Pdf itself is here
It's called paradiso. He also has a few others called infinty and lucid warp. He puts a lot of effort in, and it's free. He's a good lad. His site is http://www.dreamport.net/ i suggest looking at his other courses, just means registering on his forums.