There are various options for book repair. Making a booking at the bindery, bringing your book, and discussing the possibilities are the first steps. In the meantime, here is an overview:

It is worthwhile thinking about your plans for the book and how you intend it to be stored, handled and used in the future.  Each stage increases the level of INTERVENTION, and hence INVASIVENESS of the treatment, and consequently the time, and cost of having the work done. Not every treatment is necessary or appropriate to every book.