Look at the tutorial - it does everything it can to encourage you not to use the arrow keys or PGUP/PGDN. No, you're supposed to learn all kinds of whacky key combinations instead. That's all for a good reason but it's hardly encouraging for new users faced with the choice of doing things the "proper" way and building new muscle memory vs. using the keys they already know.

If all you want is a decent editor to get some work done without having to spend a fair amount of time learning the editor itself, Emacs probably isn't the best choice.

(To others reading this comment: Emacs editing commands have a hierarchy of sorts. It's powerful, and context-aware. But it requires you to internalize things like CTRL-f to move the cursor to the right. Unless you make the effort to learn them - or use evil-mode - you miss out on a good chunk of what makes Emacs so great for editing.)