Five finger rule to choose what to read next

Went to Youtube for some book content (the Shy Girl issue which I only got to know about this week) then I lost interest. So I went on a search for "how to choose what to read" and this Five finger rule for kids to choose book to read video showed on the results. Choose a book and read the first page or two. Put one finger up for every word you don't know. If five of your fingers go up while…