few questions. 1. what is a good IV beginner dose? i' ve read through some threads and i've heard numbers such as: i then went to erowid and read that a dose should be 5mg-10mg, converting say 8 mg to a gram is .01 grams, so .025 grams (25mg) would be an overdose? i guess i'm just confused as to what kind of dose i'd be looking at for my first time, and i understand purity is a factor, but all around what is a good number to start with? i mean assuming i'm going to get some decent H. and if say 5-10mg is a decent dose to start with, how the hell do you go about measuring that much powder accurately? 2. after the initial effects, is there a come down like coke? by come down i mean the part where you notice the effects going away, and having feelings of wanting them to come back (ie, wanting to do more coke). and if so, does weed help? 3. are there different levels of withdrawl? i had a buddy who got vicodin after surgery and finished the whole thing (20 pills) in 4 days. he claims the next day he had minor withdrawl symptoms, not anything close to full blown heroin withdrawl, but headaches, trouble sleeping. does weed help with any of this or make it easier? 4. is sniffing the shit you get a good way to test for an IV dose? i'm thinking maybe sniff enough to get fucked up, remember how much it took, then maybe 1-2 weeks later do a little less (then what i sniffed) in an IV. is this a realistic was of finding a good dose?