What is the best way to earn money mining Bitcoin? Simply stated- what is the most cost-efficient way to earn money from mining Bitcoin?  I've been a HODL'er since '14 but I recently wanted to deep-dive into mining for fun and was surprised to find how easy it was to do with a Raspberry Pi, slushpool account and a little bit of help from StackExchange:Bitcoin.  My question now is- do I build a Raspberry Pi "bucketwheel" equipped with USB-miner sticks like the crate displayed below, purchase an Antminer S9 or go to the cloud?  I'd appreciate any guidance or considerations for generating >= $100 month- again this is just for fun in experiment; I'm not looking to become the Hunt Brothers of Bitcoin ;)
If you mine with your RaspPi or your PC, you'll lose money because of electricity fees. The best way to mine is buying a miner (S9 is the best currently), but if you don't want to pay $1500, or don't want a noisy machine at your home, choose cloud mining. It's a bit risky, too.