Answer:

To be better at English

• have a good dictionary, Oxford is the best. You should have both English to English and English to (yourmothertongue).
• Read English newspapers. Underline the words whose meaning you don't know and write their meanings. At the end of the day revise them. Your vocabulary will enhance.
• Create situations in your mind and practice the conversation in English.
• Read the Grammar book properly.

Now coming to the second question, being a topper should not be the goal, but understanding the concept must be your goal. By this process you'll achieve both

• If something is taught today, revise it on the same day. Keep reading it at an interval of 3 days, you'll memorize it completely.

Hope my answer helps.

Answer:

To become topper of all subject in class you need to clear all your doubts at first. You need to be confident rather than nervous. Understand rather than memorizing. Practice samples or revise previous year paper. Believe in yourself, don't hesitate. Practice or revise chapter daily. Don't study before sleep. Revise early in the morning.  

 And to get proper English don't be afraid of making mistake. Practice every day. Surround yourself in English. Take test of yourself. Watch English shows. Use English whenever you can. Use English dictionary. Don't ignore phrasal verbs. Start conversation in English. Read English newspaper and underline word whose meanings you don't know. Always revise at the end of the day.

Explanation:

Hope it'll help you.