I really, really would not recommend that. Like... at all. Even native speakers of English learn from teachers. There is only so much books can teach you about language.
[url="http://www.esl.net/textbooks.html"] here is a list of good books and programs commonly used for people who are learning English as a segundo language. But I would highly recommend using these as secondary resources and getting a teacher or mentor.
posted over a year ago
I mostly agree with bri-marie but if you just want to improve your English, you can do it por leitura / watching films / chatting on the Internet and perhaps you can revise grammar from grammar practice books (e.g. Murphy's Grammar in Use series)