Vaccines are widely available in the US for walk-in service at medical providers and pharmacies. In Canada, first doses are available by appointment and second doses of are being prioritized by age group.
This is a list of official websites with information on COVID-19 coronavirus in the region.
Manitoba: 2nd dose delay
Shared health / Soins communs
If you need other general information not specific to your area, Ars Technica has published an excellent series.