@OP each project has their own whitepaper and there's no such best whitepaper. A beginner don't need to learn all thing, you just need to learn how it's work, the security and the reason you invest in that project. If you read many whitepapers of altcoins project, you will get confused.
If those whitepapers are old enough you could just use programs like chatgpt to summarize them to you like you wouldn't have highscool level of education or something like that. And if you have have an access to chatgpt4 you can do that with any whitepaper.
Terrible idea, asking Chatgpt to summarize it will give inaccurate definition and each whitepaper project is differ to another one, you can't expect it will summarize all of technical words in one. I will not be surprised if user will call Bitcoin fee is gas fee, decentralized exchange is uniswap and other misleading information.