Looking for help, I'm a beginner looking to learn about Bitcoin mining

Hi everyone. I'm looking to get into learning about cryptocurrencys and experimenting with mining them. I'm planning on getting a raspberry pi for Christmas and hooking up some USB block Eruptors. I know I won't get a good roi but what would be the best USB device to get? Can anyone tell me some insight on these? And which one I should get.

http://amzn.to/2f6iA6x

http://amzn.to/2fhqCMP

http://amzn.to/2f6kZ0W

http://ebay.to/2fhlXdO

http://ebay.to/2f6krYR

Thanks for the help.

Submitted November 04, 2016 at 06:24AM by Destr0yer56 http://bit.ly/2f6lc4h