I was taking a nap 2 weeks ago, then something barely kept me conscious, and then I started seeing like transparent eyes going across my vision and heard buzzing noises, then I wake up on grass, and knew I was dreaming. I stabilized the dream as best as I could, but I couldn’t hold onto it for very long because it was getting noisy in my room.
It looks like WILD. Buzzing usually indicates transitioning time. Well it’s one of the many indicators that you will about to enter SP/dream. You should try it again…
Good luck! 
Sounds like a WILD, because you were taking a nap and the buzzing noises.
Wow, most people try very hard to get a WILD and you just did it accidentally.
Well done 
Yep, a nice WILD.
They do happen accidentally. You have to be somewhat lucky though 
I don’t understand the whole SP thing can you explain it?
SP occurs when you enter REM sleep, then we dream and our brain paralyzes the body so we can’t act out of our dreams… It happens every night every time you enter REM sleep.
HH are something that is happening before SP and after SP. You may experienced them or not. But if you pay attention, if you stay awake/aware long enough you will experience them. They can be pleasant or terrifying it depends on what kind of approach you take. I find them pleasant and amusing although I had one or 2 scary experiences… But nothing to be afraid of, it’s all happening in your mind…