Theo Park builds the setups before he writes about them. He came up in IT support and then security operations at a fintech, where his job was the unglamorous part of the internet: hardware tokens, recovery procedures, and the help-desk ticket that starts "I think I sent it to the wrong address." He bought his first Bitcoin on an exchange that no longer exists, lost access to a wallet once through his own carelessness, and has been methodical about backups ever since. For whale.day he walks through every flow himself, on a real device, in the order a reader will hit it. If a step is irreversible, he says so in the line where it happens, not in a footnote. He has strong views on which exchange a beginner should actually start with, and he will name it. The point of a guide, he figures, is that the steps work.