Does it worth it?

I am planing to To study the following items on udemy and few other platforms, but does it worth it?

  1. Zero-knowledge proof (ZK) design & implementation
  2. Applied cryptography (limited evidence)
  3. Post-Quantum Cryptography
  4. Lattice Cryptography
  5. Polkadot experience
  6. Substrate framework knowledge
  7. Quantum-resistant cryptographic techniques
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I found polkadot have good course about that, but still searching