Because I figured I should have it on this site somewhere – although this covers most of the functional groups you’ll meet in Org1/Org2, if you run into a thioketone or some other bizarre entity, you’ll probably want to see Reusch or Wikipedia. 
Here are some examples of applying the order of functional group priorities to solve nomenclature problems. The highest ranked functional group becomes the suffix – it’s highlighted in red.

masterorganicchemistry
com
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Animation makes it all the more interesting !
thanks.