I think that the reading center should be a place where students can go to feel comfortable and to get away and just READ! I would suggest that you don't require students to respond to the books but just let them enjoy them in other ways. Also, don't have so much stuff or choices. This too could be overwhelming to the child. Provide a few pointers, the glasses are good and just have a few book bins available for them to choose from. Include books that have been read in class so that students see something familiar. Sometimes we can go overboard with always having students responsible for "responding" at centers and not allowing them to create their own learning environment. Hope this helps.