Textual Desire

After that last (and slightl humiliating) attempt at coherent thought, I'm now thinking that I really want to read some Freud - the problem being where to start. I know I want to read Totem And Taboo, Moses And Monotheism, Mourning And Melancholia, Beyond The Pleasure Principle, etc., but are there any other texts I need to read as a 'grounding' before I can get to the good stuff? And can readers direct me to the best translations/editions? And, also, is the Penguin Freud Library worth investing in?