For tides and currents, if you can’t find any place that sell them, you can download the entire PDF from the government website and print out only the pages you want. https://charts.gc.ca/publications/tables-eng.html
For charts, if you can’t find the place you needed and you have time, you can try and see if you can find the one you need from MapTown and order them online:
For local store, you can try West Marine. They sell a lot of boat stuff and most likely will have charts.