Some superb tutorials on camera settings. 

 

Using Flash:-

 

https://www.youtube.com/watch?v=asK0lWp8m38

 

 

White Balance:-

 

https://www.youtube.com/watch?v=fgyjxQxX_GI

 

 

ISO Explained:-

 

https://www.youtube.com/watch?v=qHiszv3KNr4

 

 

Focal Length Expalined:-

 

https://www.youtube.com/watch?v=HG-vPzrEONM