If I've talked about it, I will post here about it. Below you will find definitions--some by me, so copied and pasted (and cited)--and you will find links to apps or product pages. I am not paid by anyone to endorse these products. If I've found them helpful and I think you might, I share. Makes the world go 'round, right?
Amateur -- One who does it for love, not money.
Composition -- What elements comprise the picture and how they are arranged.
Golden Ratio -- (we'll get back to you.)
Rule of Three -- Mentally, or via settings, dividing the screen into three equal segments and placing the subject in one of the three segments.
Rule of Twos -- As with Rule of Three, only we split the screen into two segments, either vertically or horizontally.