There are two main sources for English books in Javea, Polly's and Bookworld.
Polly's is right at the heart of the Port and sells a fantastic range of second-hand English books. It is run by Shelagh and Richard Alan, a charming Scottish couple who are happy to advise. Just tell them the last few books you read and they will recommend something new for you that you are bound to like. What's more, once you have finished it, you can return it and get half the cost back as a credit on more books.
After you have chosen your book, head across to the Promenade and have a cool beer at Posito (chilled glasses), or beer and tapas at the bar on the corner, next to the Estanco.
The other option, if you are looking for new books, is Bookworld. This is on the road from the Port to the old town (Avenida Amanecer) in Javea. Bookworld sells books in Spanish, English, French and German. It has much more of a modern feel but for my money, nothing beats Polly's. Tel: 966 462 253 Mon-Fri 10-2, 4-8, Sat 10-2
For more info on Polly's go to http://www.javeavillas.co.uk/bookshop.htm
For Javea villa rental go to www.javeavillas.co.uk