There are something like 280 coffee shops in Amsterdam. Do a bit of exploring and see what you find - you
might be surprised.
Even if you’re used to smoking cannabis, still be careful on your first time out to a coffee shop. The weed here is probably stronger than anything you’re used to and will knock you right on your ass if you’re not careful.
If you should start to feel sick or just not quite right, drink some sugar water or drink some coke, that contains a lot of sugar too) to get you (or your friend) back on your (his/her) feet.
Smoking in the streets, while not officially permitted, is tolerated as long as you show courtesy to others, meaning you shouldn’t smoke around little kids or the elderly.
Don’t be ripped off! Most places are very meticulous in weighing out their goods and you don’t have to worry. However some of the touristy places will sell pre-rolled spliffs that maybe aren’t quite what they should be. The Dutch roll their joints with tobacco and the amount of tobacco in these pre-rolled spliffs might be more than you bargained for.
Most places that offer prerolls offer pure joints as well, just ask.
Marijuana is generally sold in grams, from two on up. (between 6 and 8 euro’s)
The one exception to this rule seems to be The Grey Area, started by two American ex-pats. They sell the typical American Dime and quarter bags here and they have a wide selection of bongs.
My advice though, if you’re not used to them go Dutch and stick with the spliffs.

By the way: Drinking alcohol and using drugs involves various risks. So, if you want to avoid risks, then you
should avoid alcohol and drugs. If you decide to drink alcohol or use drugs, it is your own responsibility.
Info alcohol : 0900 500 2021 (09.00 - 17.00h)
Info drugs : 0900 1995 (13.00 - 21.00h)