Hi there DDreamer. Would like to add something that might help your friend's interest in Lucid Dreaming.
I think of it as an great opportunity. You can talk to your subconscious and solve mysteries in your own head. You learn alot more about yourself, and there is lots of interesting things. He needs to wait, and maybe keep a DJ near hand, read somewhere that If you wake up and get out of bed and such, you might lose "hold" of you're dream. So I recommend the first thing to do in the morning when you wake up. Is write those vivid dreams down! Good luck, Sincerely SlickPot.