It's amazing you are replying to an article about bitcoin mining using more electricity than Argentina, yet you say bitcoin is backed by nothing. Are you saying that all that electricity and the investment in those mining machines is worthless?

It's a fallacy that nothing backs bitcoin. Mining new bitcoins requires a significant amount of real energy and investment.

Scratch is awesome. It's simple enough that someone like my 6 year-old nephew can have fun fiddling with it. But it's powerful enough with sophisticated concepts like events, objects, multi-threading, message passing, and more to keep it interesting as you progress. Scratch is like Logo for the 21st century. My recommendation would be starting off with scratch, then moving on to something like Python.