anyone who has interest to learn about it most certainly knows about the technical details, and I hope will be active in doing thorough research in order to get more knowledge and experiences on how those technical aspects work.
You are saying like, If I want to learn 'A' then I should have known 'A' already and then I can learn about the 'A' more.

Everyone has to start at some point and there are some links have been shared already and here's more
[1]
https://learnmeabitcoin.com/[2]
https://github.com/bitcoinbook/bitcoinbook[3]
https://www.lopp.net/bitcoin-information/technical-resources.html[4]
https://bitcoinops.org/ [5]https://github.com/yjjnls/awesome-blockchain
My recommendation will be start from basic, like what is node and how node operates and then run your own node and validates the transactions, what is the block and such things will lead further interests.