The Five Finger Test
1. Open the book to the middle. Select a full page of text.
2. Read the page outloud.
3. Put one finger up for every word you cannot pronounce or you don't know.
4. If you get five fingers up on one page, the book is too difficult to read alone.
5. If you do not get any fingers up, but you are reading very slowly, and understanding almost all the words, you may not enjoy the book.