Learning basic English Grammer.
I'm preparing myself for a competitive exam. I'm reading basis of English Language. I read parts of speech, uses of article, tenses and punctuation. I things these rules are enough to write good sentences in English language. I'm also learning vocabulary words. Please guide me , what are other things that are important to write English Language.
Thanks in advance.

Question

Answer

You should try to read text in English. Not style guides but news articles and similar things; this will give you a better idea of idiomatic details in the language. I can tell you that your question itself is not grammatically correct. There are errors in sentences two, three, four, and six. Perhaps you should try to edit your own question as practice.