i am weak in english . can any one tell how to improve my english

Identify the field in which you are weak like grammar or something else.then according go on prepartion.if you are weak in  grammar you can practice online tests to improve your grammar.if you are weak in vocabulary then you can watch stand up comedy videos from youtube or motivational speeches etc. so that you can understand how to actually start a conversation with someone.go on writing a paragraph each day on your own about anything so that you can able to improve your writing skills in english.