If you want to play around start with something like this https://www.amazon.com/GekkoScience-2-Pac-Compac-Bitcoin-BM1384x2/dp/B06XBWK2W5/ref=sr_1_fkmr1_4?ie=UTF8&qid=1502165368&sr=8-4-fkmr1&keywords=gecko+bitcoin+miner.  Gecko can be found here in the hardware as well.