How to buy ETC on MetaMask?

How do I purchase ETC using MetaMask? Could you please provide step-by-step instructions on the process? Also, what are the necessary prerequisites I need to fulfill before attempting to buy ETC through MetaMask? Is there a minimum amount required for the purchase? Additionally, are there any fees associated with buying ETC on MetaMask, and how do they compare to other platforms? Furthermore, is it safe to store ETC in MetaMask, and what security measures should I take to protect my assets? Finally, could you recommend any resources or tutorials that could help me understand the process better?