Yep, it’s that simple....well, almost. The idea is that you take your subject(s) or areas of interest and place them along or near the intersecting parts of the grid.
Surprisingly – or not – many people tend to take pictures with their subject being smack dab in the center of the photograph. This applies to all subject matters – people, landscapes, wildlife, etc. Although, sometimes a photograph can walk away looking better with the subject centered, that’s rarely the case.