We have just started to have paper books, but we still have all her board books too. We are a reading family and she already has hundreds of books and she loves all of them but like someone else said, she can take board books anywhere without having to be constantly supervised and she can turn the pages easier so I think she still likes those better. I would say to get a nice collection of board books at first. Plus, they are more durable than paper books and so you will be able to use them for other children.
Also, board books are easier to clean (babies can be sticky, lol). If something gets on it, I just use a baby wipe or disinfecting wipe and its clean. She only has washable paints and crayons so if she decided to "decorate" her books, then I can wipe it off the board books. Not so with paper books, lol.
We bought a lot of ours on sale from stores, from large used book lots on ebay, and from the library when they have sales. I don't mind getting board books used because I can disinfect them.
If you are starting a book collection I would suggest getting lots of different kinds. We have books that tell a story, dictionary-like books (books with the word and then a picture for example pictures of animals then the names of them), learning books (numbers, opposites, sign language, etc), play books (picture finds, mazes, I-Spy, etc), touch books for sensory stimulation, and just fun books that she picks out.
Now that we are moving to paper books I am trying to get a variety too. We have some that have small words for learning how to read and also ones that are longer stories that are obviously for us to read to her.
We try not to spoil her with tons of toys (especially cheap plastic ones that will break after a few weeks!) but books are always something that we both enjoy and I feel no guilt for getting.
