You can literally mine with any hardware that is not an ASIC (as they do no 'useful' computations).

I guarantee you that within 30 minutes you will be comfortably mining from a cold start if you do it through GRCPool. There is a snazzy 10 minute video walking you through the entire process.

To top that off, we are incredibly lucky to have a zero fees pool with an active dev. The only thing you pay for is covering the transaction cost when you withdraw your GRC, which is utterly negligible.