In order to prepare for English you should do lots of Reading, You should read more and more to improve your vocabulary and reading skills. You can read the newspaper specially The Hindu. Learn more words. You can take help of flash cards.

All the Best!!

Here are some tips that you can follow to improve your English language:

•  The best way to start with is to set your basics and fundamentals of the language clear. You can go through some good grammar books like ‘Wren n Martin’, and revise it properly.
•  The reading and writing practise is essential for scoring good in the paper as it will help you to learn new words and sentences, making the subject easier for you.
•  Make a huge repository of words as it will help in making your vocabulary stronger and will also boost your confidence level. Remember, the more you remember words and their meanings, the language would become easier for you.

Good Luck!