Books play an important role in Wuthering Heights. Edgar Linton spends much of his time in his library. Mrs Dean has educated herself and thus made herself comprehensible to us by reading all the books in the Thrushcross Grange library, except the foreign language ones. Young Cathy Linton enjoys reading, although her mother not so much so. One of the young grooms risks his job in return for books. Joseph only reads the bible but it is very important to him. Lastly, Hareton attempts to educate himself by reading books, but throws them on the fire when he is scorned by Cathy.
I have wondered about the value of books back then. Books were comparatively expensive while most people were comparatively poor. On the other hand, there were not as many sources of information or amusement. When reading introductions of classic literature, you often read something like: the first edition of 3000 copies sold out within a month, and a second publishing run of 5000 copies was... Those sorts of sales figures do not seem very high for a population of 20 million. I suppose that would be explained by their high cost. I read in the introduction to A Christmas Carol that the first edition sold for five shillings. The first edition sold out but still made a loss due to the high cost of production, due to it containing colour pictures I think. Five shillings seems to have been about a quarter of an average weekly wage, so quite a lot of money for a small book. I get the impression many books were sold in three volume formats, so that must have been expensive. I suspect Great Expectation's Pip and Edgar Linton's collections of books represented a large part of their expenditure. Luckily for Pip, I suspect their resale value was high. When Hareton threw his books on the fire, he was burning a fortune.