Could I get more clues? How might someoone hire a 40 year old for NFT/blockchain?
Both ecosystems use Node.js for scripting/tests/frontend so that is going to be advantage to learn.
A good progression might be:
- Modern JS / Node.js
- Solidity / Ethers (https://docs.ethers.io/)
- Rust
- Solana / Anchor (https://project-serum.github.io/anchor/getting-started/introduction.html)