I’m Québécois. Honestly, I’m not aware of any Quebec-specific online resources. If you’re still living in Canada, there’s a good chance that you can get night classes at a University that would be taught by a Quebec expat. Otherwise, I wouldn’t agree that other resources will give you a half-baked understanding. It’s mostly a question of training your ear for the accent, which you can do by watching shows, for example. Differences in vocabulary are well-documented and easy to memorize (probably, as someone who’s done the reverse and learned the France equivalent).