If someone wants to learn bitcoin and blockchain from the cratch please recommend the best resources for a)free and b) paid sources thank you e
best resources for a)free
- Bitcoin Stackexchange
- Reddit: r/bitcoin, r/BitcoinBeginners/, r/lightningnetwork/
- GitHub repositories for different Bitcoin projects
- IRC channels
- Bitcoin dev mailing list: How can I efficiently search the bitcoin-dev mailing list for discussion of a specific term?
Try things, read more about them and ask questions. If starting from scratch first thing you can do is try running and using a Bitcoin full node. Use testnet or regtest for experiments.