When my elder daughter 1 1/2yrs old, she just like to pick out all the books and put them back without a look.
Then I gave her the rules to obey before we went in the libary: 1)each time only pick out 3 books and she have to put all of them back to the shelf before another books pick out. 2) Can't disturb other people 3) Can't run or noisiy. And the punishment will be leave the liba immemdiately and not go there again. (it is the most important part that make the child think only behave good could go to liba.)
As I just want her feel books is a kind of toys and feel comfort/familiar with it, so i don't push her to read with me. Now she is almost 4yrs old, reading books and go to the libary are some of her favor.