Follow the people who have batter understanding of Bitcoin and learn from them. Here is a small list :
If possible, read these books: The BITCOIN standard by Saifedean and Mastering BITCOIN by Andreas
Mastering Bitcoin by Andres M. Antonopoulos https://github.com/bitcoinbook/bitcoinbook
Bitcoin Resources by Jameson Lopp https://lopp.net/bitcoin.html
https://nakamotoinstitute.org/literature/
https://medium.com/@pierre_rochard/understanding-the-technical-side-of-bitcoin-2c212dd65c09
Bitcoin and the rise of cytherpunks https://www.coindesk.com/the-rise-of-the-cypherpunks
The BITCOIN standard by Saifedean
The Ethics of Liberty by Murray N. Rothbard https://mises.org/library/ethics-liberty
The Ethics of Money and Bitcoin by Nicolas Dorier https://medium.com/@nicolasdorier/the-ethics-of-money-and-bitcoin-f6c4f568d9f9
Don't keep your BITCOIN in exchange. As soon as you buy your BITCOIN from exchange, transfer your BITCOIN to your own wallet. If you have large amount, store in hardware wallet.
You must keep your private keys safe.
Bitcoin Miners Beware: Invalid Blocks Need Not Apply Bitcoin is an impenetrable fortress of validation
https://hackernoon.com/bitcoin-miners-beware-invalid-blocks-need-not-apply-51c293ee278b
BTCPay Server: Open source non custodian self hosted https://blog.btcpayserver.org/
Openonde: Custodian, 1% charge, first 10,000$ zero fees https://www.opennode.co/
The Eleventh HOPE (2016): "Stealing Bitcoin with Math" https://www.youtube.com/watch?v=f2s3_UG9IPU
Unpacking Bitcoin’s Social Contract https://uncommoncore.co/unpacking-bitcoins-social-contract/
Technological Teachings of Bitcoin - What I’ve Learned From Bitcoin: Part III by Gigi https://medium.com/@dergigi/technological-teachings-of-bitcoin-20420b459417
Bitcoin readable code https://github.com/bitcoin/bitcoin/blob/4405b78d6059e536c36974088a8ed4d9f0f29898/main.cpp#L1206
Bitcoin Timestamp Security by Jameson Lopphttps://medium.com/@lopp/bitcoin-timestamp-security-8dcfc3914da6
Johoe's Bitcoin Mempool Statistics https://jochen-hoenicke.de/queue/#0,2h
BIPs https://samouraiwallet.com/bips
Bitcoin and me (Hal Finney) : https://bitcointalk.org/index.php?topic=155054.0