New shelves for Elementary Library

We are an elementary school who would like to update our library.  In order to become more current, we would like our library to be half library and half computer science.  In order to do this, we are in need of some additional shelves to hold our children's books.  We have a scout who is willing to build the shelves for us, but we need wood and other supplies to build them.  We would appreciate any help you could give us.  Thank-you!!