How to GAIN weight?

I definately will. I've been contemplating it for a while now actually, last year I had known a buddy of mine that was just starting on it and he tells me the immense effects from it are amazing, and it was instantly noticeable when he started it in school, his grades jumped and he told me that he started to become excited about being in school, which is something I wouldn't mind.

Also, the addictive part. I do have somewhat of an addictive personality, but I think taking this, as you have done, can be okay if moderated and only taken when needed. Like weed, I only do it on the weekends and hardly ever during the week, it's diminishing return is pretty bad as well and if smoked enough your tolerance will go through the roof, I have a point where I can get reaaaaaallyyy high off of a small amount, and it hasn't gone up, due to me cutting myself off.

We'll see though.