user127635: 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

user-1: 
best resources for a)free


Bitcoin Stackexchange
Reddit: r/bitcoin, r/BitcoinBeginners/, r/lightningnetwork/
Bitcointalk
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.
You can download Bitcoin Core or Bitcoin Knots for full node.

127635: <p>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</p>
 -1: <blockquote>
<p>best resources for a)free</p>
</blockquote>
<ol>
<li>Bitcoin Stackexchange</li>
<li>Reddit: r/bitcoin, r/BitcoinBeginners/, r/lightningnetwork/</li>
<li>Bitcointalk</li>
<li>GitHub repositories for different Bitcoin projects</li>
<li><a href="https://en.bitcoin.it/wiki/IRC_channels" rel="nofollow noreferrer">IRC channels</a></li>
<li>Bitcoin dev mailing list: <a href="https://bitcoin.stackexchange.com/questions/107756/how-can-i-efficiently-search-the-bitcoin-dev-mailing-list-for-discussion-of-a-sp">How can I efficiently search the bitcoin-dev mailing list for discussion of a specific term?</a></li>
</ol>
<p>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.</p>
<p>You can download <a href="https://bitcoincore.org/en/download/" rel="nofollow noreferrer">Bitcoin Core</a> or <a href="https://bitcoinknots.org/#download" rel="nofollow noreferrer">Bitcoin Knots</a> for full node.</p>
