But out situation would surely be different from whatever you might be shooting in...so just giving you the settings wouldn't really be helpful, now would it?
What I'm really trying to say...is that you should take a step back and learn the basics of photography; things like shutter speed, aperture, DOF, metering etc. That would be a good place to start.
Once you have a good handle on that (which will take some time & practice) then you can be free to concentrate on the little things that make for great family portraits...like composition, posing, clothing and getting good expressions from your subjects.
Of course, the most important part is always light. So it will help to know how to work with natural lighting and being able to adapt to the situation that you are shooting in.