I think the tried and true public health measures still remain. As much as you can, continue physical distancing, washing your hands, covering your coughs and staying home if you're sick. That's very important.
Together with all of the provincial and territorial chief medical officers, we've come to a consensus—really a recommendation—that a non-medical mask or face covering will provide an added layer of protection for you to protect others, or for others who are wearing it to protect you, from respiratory droplets if you can't maintain that two-metre distance or you can't anticipate whether you can maintain that distance. In particular, that would apply to public transport or going to a grocery store, or situations like that, but certainly it's the concept of “I protect you and you protect me”.
The individual provinces and territories, though, do issue their own specific advice to citizens based on the disease activity in their area.