for bitcoin, there is plenty here: https://www.lopp.net/bitcoin-information.html https://www.lopp.net/bitcoin-information.html once you're up to speed on bitcoi

for bitcoin, there is plenty here: https://www.lopp.net/bitcoin-information.html https://www.lopp.net/bitcoin-information.html once you're up to speed on bitcoin, you're ready for smart contracts. i'd suggest looking up Sergey Nazarov on youtube and watching his interviews in order from oldest to newest. that will give you the basics to go from there