What is a Focus Group?

A focus group is to get as much information about what people think about your product you've produced. This is achieved by listening within the group, not talking and taking lots of notes. 

The point of a focus group is not to sell your product to the group but to get feedback on it, so that you can make it better and this is all dependant on the response you get from the group. If you go into a focus group with the intention of just selling your product by asking not very broad questions and highlighting things you like about it, the focus group will struggle to give negative or helpful feedback, therefore you will not be able to improve. You musn't interrupt your group nor defend the product - also don't explain, let your audience say how they feel. As the person holding the focus group, you must take on every critism or suggestions, not ignore them just because it's not what you want to hear. 

Questions asked within the group shouldn't be limited or yes/no questions, they should be open and simple for the group. 

The new information is to help improve the effectiveness of your product and make it more appealing to an audience. The best opinions you're going to get is from your focus group because this is an audience you want to sell your product to.