I’m undecided about something. For a language that you are starting off with—say Spanish for me—is it better to do some children’s stories first, or to get stuck into Harry Potter immediately?
It should be possible to do the latter and look for i+1 sentences and phrases where you find them. Concentrate on them where they are embedded. You don’t need 95% known text, since the whole of it is made understandable by using my method. However, it is probably better, psychologically, to head over to the likes of Bookbox initially.
So I don’t know—maybe do both?