Can someone explain dividends to me?

[SilverXX90]

Being a new trader I don't understand how dividends are paid. I have taken a screenshot of the FNZ ETF (NZ) fund's historical dividend payments as this is one I have invested in. Can someone please explain the numbers, what they mean and how to calculate possible dividend returns? Also what is the dividend yield and how does that work? The FNZ fund dividend yield is 5.289%. Thanks!