You do not learn English just by reading some books. You have to devise a strategy to learn English.
Visit this site for some great tips and tricks:
Guide to learn languages
The the topics covered in Basic guide:
**
Basic Guide**
Reality Check
Basic principles
How not to learn
Where to begin
Intermediate Learning
Advanced Learning **
How to Make the Most of a Language Immersion Camp
How to use Flash Cards to Improve your Vocabulary Using Time you did not Know you had
Basic Phrases you Should Master Perfectly
How to Raise Polyglot Kids
Confusing two closely Related Languages
Making Vocabulary Lists in your Mother Tongue
Using the Internet to Listen to Radios in your Target Language
Reading Foreign Newspapers in your Target Language for free over the Internet
How to get Native Speakers Help you Improve your Target Language