^^true.
Its related to depth of field.
higher aperture(narrower) more depth & lower aperture shallow depth of filed .
Thats funny

...he must have never heard of aperture...that too which is higher and narrower...whats shallow depth of field??
In simple lanuage we can help him...best is what I do sometimes...take a shot on auto and see whats lacking there...then change it to manual settings and put the settings auto took and make changes what u want..
u can always see EXIF in pictures with softwares like irfan view or picasa..EXIF data contain all the settings ...learn by your mistakes...enjoy clicking