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Once you are set up, it is exactly the same amount of effort as any other coin. Getting set up requires a little more work though, as Gridcoin pays out based on contributions to scientific research done through the BOINC platform. You can't 'mine' GRC in the traditional sense --> the compute power of the network is actually put to use here.

There are lots of great tutorials on getting set up, both written and videos. If you have a little patience, you could be fully set up mining in a pool in an hour or tow. To mine solo, give it maybe 2 days of intermittent activity.