I'm using lyricstraining.com , a no-cost website that is intended to help build listening skill in foreign languages. I'm using it to improve my listening skill in Spanish, but it offers ten languages including English. You listen to music videos in your target language, watch the lyrics, and need to fill in blanks in the lyrics by typing the word you hear correctly. I honestly am not sure, but I think it's helping me.

you'd better ask. What should i do to improve my listening skill? the answer is. you'd better do practice at most, try to speak with friends and also get friendship with native people so that you may improve you speaking skill. ... I mean do practice.

You should watch movies with closed caption. Listen conversations in english. Use some online dictionary witch you can hear the pronunciation. It's helpful. I hope this tips be useful for you! :)