Canada is poised on the edge of a cultural revolution and dramatic social experiment as it prepares to legalize marijuana on Wednesday.

Although the move has been planned since Prime Minister Justin Trudeau was elected in 2015, the country is scrambling to get ready for the big day because while the federal cannabis act sets a broad skeleton, Canada’s 13 provinces and territories set their own rules — including where marijuana will be sold and where it can be consumed.

Not all of those rules have been announced yet. And they conflict from one part of the country to the other, leaving many Canadians confused.

Here are answers to some of the questions tokers and nonsmokers alike are asking as Canada gets set to make history:

Where can I buy marijuana in Canada?

In some provinces, weed will be legally sold only in government stores; in others, only in private stores; and in others there will be a mix. No bar or restaurant will be able to sell marijuana, at least not at first.

Ontario, Canada’s most-populous province, will have privately run stores starting on April 1. Until then, cannabis will be available legally only online, from a government-run site. [Read more at The New York Times]