How can I determine the IP address of my Canon printer to manually add it to my computer?

The method varies depending on your printer model. Generally, you can find the IP address by printing a network configuration page from the printer's control panel. Look for options like 'Network Settings,' 'LAN Settings,' or 'Print Network Config.' Alternatively, you can access the printer's web interface by entering its default gateway address (often 192.168.1.1 or 192.168.0.1) into a web browser and finding the IP address in the network settings.