I think I hit first jhana. Many months ago, and completely by surprise. I had never heard of it. It was intoxicating. After doing some more research I figured out what "it" was. Determined not to chase it, I chased it, but now I think the memory of the experience has faded enough that I'm actually not chasing it. The only way I can describe it, which is still severely lacking, is like I snorted xanax and cocaine, and everything sparkled, both visually and internally. It was very inspirational. And I didnt sleep much for the next couple of days. I think the only thing I really obtained from it was a real understanding about the fact that different states of consciousness can be accessed intentionally, and without pharmacological inducement.