one quick thing to consider... the better the coke is... the less you have to do... Gravitate towards to stuff you only have to bang out bumps to get high as opposed to doin rails all the time. And also if you start sweating and your heart starts racing - start pacing around and drink some water to calm yourself down... goodluck

PS. Be prepared for long, in depth and very emotional conversations = OR = to be all pumped up yelling and screaming and feeling like you're the toughest guy in the world = OR = to just be really sweating and paranoid... These are the three common reactions to being HIGH off coke (just cause you blow it doesnt mean you're high lol ) from my experiences...