For these challenges, pick up the stickers and then select books fitting that sub-genre or trop (For example: "Rockstar" would be reading books with a rockstar/band/popstar subgenre). Each one will have 5-7 slots.
Read a book and write in the title on the shelf or in the slots below the shelf, or both.
Apply the book sticker to the shelf
Repeat until done
Once completed, add the badge sticker to a page to keep track of which ones you've completed!