Hello Richard, welcome to the forums! Which phone do you have? Could you post a screenshot so we can get more details about these icons? Are there in your status bar or anywhere on your home screen?
The three dots top left mean that you have more notifications that can't be shown because there's not enough room in your status bar. I'm not sure about the rest. Can't you get more information about them if you swipe down from the status bar? There should be a notification there.
The dancing person is Simpsons tapped out. It's a game. The V with the curve is Vine. The one that looks like a dial is trivia crack. The envelope is probably a text message. The square is probably a screen shot