Smoke

The best places to buy weed are along 17ave SW or Stephen Ave in the downtown core. If you know a buddy in the city it can make things a lil easier. It's always better to go with a local rather then a downtown corner guy. You'll get better counts, better stuff. But it's pretty easy around Stampede time, you can walk just about anywhere downtown and find someone toking away in a park. Or you'll have the guys walk by you selling budz. If you keep your eyes open you can prolly find some locals toking away, but try to avoid asking people around the clubs, as sometimes they can be a litttle testy.
Pretty average prices. 10-g , 60-80-1/4 , 160-200- O If you get stuck buying from runners along 17th or Stephen try to stick to dimebags.
They are mostly BC Bud, although you can find most anything if you put your mind to it and have some resources to work with. However if your just visiting the city, chances are you wont have much of a selection other then hash or weed. Avoid buying off people that also sell hard drugs, they usally have lower quality stuff, and sometimes it can be shake.
Calgary isn't really a place you go just to smoke a lil pot. Although you're probably safe just to walk down any street puffing on a joint, some cops may try to harrass you, or even dump your bag. But as a general rule if you're not bothering anyone, they won't bother you.