When I read a book, I'm often totally transported into that world. I wonder if areas of my brain invoved with vivid dreaming are being activated when I am in this state.
the light bulb one is easy enough. you just have to flick a switch every time you walk past one (this is during the day while you're awake) and then eventually you will remember to do it in your dream. when the light doesn't switch off in your dream, thats when your conscious mind will hopefully notice and you can start to take control over the dream
its a bit harder to do the same with words. when you find some in your dream, you have to focus on a few of them and try to memorise them, (which isn't easy when your mind is in that state) then look away for a few seconds and then look back and see if they are still the same.
ive only ever managed to test that out once myself but after a while the words started to change and others disappeared which made me snap out of it and realise i was in a dream.
tl;dr wordz is new init?
(I did that once, and iirc I had 2 fingers on one hand and 7 on the other? Or something like that)