You can read an essay that's good for the improvement of the english grammar.
I agreed! but just reading the essay will not that much effective for English improving, you should make your own note book and note all words with their definitions from any good dictionary that you don't know then memorize them and write your own essay by using these words. it will not only improve your English vocabulary but also enhance your writing skills.
If you think it will works then +1 Kudos me to say me Thanks