My interest in mining began during a 1964 visit to the Arcadian Copper Mine in Michigan. That's me in the red hat.
Fifty years later, my friend, Karl, introduced me to Bitcoin mining. He experimented with GPU mining, early ASIC miners, and the much more capable Antminers.
One of Karl's Antminers became unresponsive after a failed attempt to update its flash memory. After soldering some header pins onto its controller board, I was able to reflash it via a serial connection. As an unexpected reward, he gave me an Antminer S3+.
With two years of personal mining experience, I started teaching Bitcoin Mining 101 at Nova Labs, a makerspace in Reston, Virginia. This website provides additional information about the topics covered in that course.