How can I improve my English vocabulary?

You can improve your English vocabulary by reading. Check some words that you do not understand in the dictionary, so that next time you encounter such words you will be familiar to it. The most imprtant to improve your English vocabulary is to put it into practice. Read aloud. Have some Englsh conversation with friends. Write simple sentences. 

Reading, reading and reading

you can improvet by reading ( books,novels,stories)

watching english movies without translation

listening to songs and repeate it

and have a notebook .. write every new word you learn.. and always read them and use them

the best way to improve your vocabulary is to save words and vocabulary as much as you can. 

Practiing a language is always useful in improving the skills of that language, including vocabulary.

Answered this many times - read more, watch movies, chat on FaceBook, listen to songs consideringt the texts