One of your first stops should be Campbell River Visitor Centre. Here, you'll be able to find your bearings and get lots of useful information before you start exploring.
This tourist information center in Campbell River comes recommended by travelers, so be sure to put it on your travel plans. Don't think the sightseeing ends there, however. There are a lot more spots ready for you to check out after Campbell River Visitor Centre. Elk Falls Provincial Park, Campbell River Museum, and Tidemark Theatre are not far away.