Some time ago Google issued a new service named Google Book Search. With this service you can read books online. Not only books in English, here you can also read books published in Indonesia Elex Media, Mizan, etc.
To use it quite easily, same way with search engine Google. You can type in keywords from the book you want to search. After that if I click on the title of a book. So you can immediately read the book.
Of course, not all the pages from the book you find you can read online. But already more than enough if you just want to know the contents before you decide to buy a book
