Why do we need to know English language? ( A post as to check if there is some technical problem abo

We want to speak English language like a native speaker and to write as correctly as a good (prolific) English writer whose work does not need to be edited, but we try to go through only a thin book of English grammar without attempting to buy a book which can be counted for its description on the play of vocabulary in the game of the language.
[Just after sending it , I will edit it.]