I really love your invention Ana, I think it would be very popular with book worms everywhere - myself included! It can be overwhelming trying to pick out a new book at the library as there is so much choice, your invention is not only a quick solution to this problem but it looks like it would be really fun to use too! With the Selector De Lecturas, you could end up finding out some new interesting stuff and discover an area of literature you otherwise might never had read. You've included some really nice and vibrant colour in your drawing too! Great work Ana, keep it up!