I use adderall when I have an essay due or report or sumtin like that, basically any kind of school thing I need to get done. I dont really like the effects it has on me though it makes me sit at my computer for hours not talkin makes me sorta anti-sociale? i guesse .. haha so therefore i use it for work purpose's I usually take 50mg or 40mg sumtimes 60mg.. 40 will normally do me, i have used it for a while so you might want to try a 20mg first and see how much it effects you. when i first tryed adderall 20mg did me. i have tryed sniffing it, it was like the same effects but seemed a bit shorter.