I have two special folders that make it easier for me to handle my books at my Ebook Reading Device.
The first folder is called "Nachttischstapel" and contains the books that I think I'll read soon.. Only a maximum of ~18 books are allowed in this folder.
And the second folder is just "Lektüre", this are the five books I'm really reading right now.
That makes it easier for me. And it's fun to sort some books into the "Nachttischstapel" or to remove them because you found something better in your other folders..