When the buttons come up, just press the one you think is correct! Pay very close attention to the "cut scenes", otherwise you will get some things wrong. If you get something wrong, you will have to start over. Enjoy!
If there are any bugs or mistakes, state them in the comments below. You can try taking it on without any knowledge, or read the book first! Either way, it is awesome. It may start late in the book and miss a bunch of important parts, but who cares! Enjoy!