There are many ways to learn Bitcoin places like Udemy, Coursera you can still read the original Whitepaper by Satoshi Nakamoto, there various books and most of all sites like this (Bitcointalk) helps a lot too. Everything depends on your determination and your perseverance.
You are right, learning from the Bitcoin whitepaper can be the easiest way to understand the concept behind f Bitcoin because all details are explained there and you will get all you want if you read and understand properly.
However, this forum is another safe place to learn about Bitcoin, you will get concise and accurate information about Bitcoin and crypto in general in this forum because this forum members are always ready to help people that are willing to embrace Bitcoin and they always share legit information about Bitcoin and cryptocurrency.
Nevertheless,
learnmeabitcoin.com will give you well detailed explanations about how you can start your Bitcoin journey, and where to save your Bitcoin safely and the methods of sending and receiving Bitcoin.