[xrd]

That's a great list. The only thing I found recently that is interesting is this:

https://www.cairo-lang.org/ https://github.com/martriay/nile/

Yes, learn and play with solidity.

That wasn't on the list, but if you don't know about remix, go there first.

https://remix.ethereum.org/

Hardhat is great, but you can do everything inside a browser with remix, it is amazing.

This is a good starting point video:

https://www.youtube.com/watch?v=XyoFT4QkoL4