I am frequent user of the keyboard commands in Excel 2016 such as Alt,H,AC = Align Center or Alt,H,AR = Align Right.
There are hundreds of these keyboards that are usually pretty easy to remember.
HOWEVER, when you go to Data, From Table or Alt,A,PT,Enter you enter a whole world of non-mnemonic keyboard commands:
Home = Alt,Y01, Transform = Alt,Y02,Add Column = Alt,Y03, and View = Alt,Y04.
Lower menus also use Y and the lowest commands don't have keyboard commands at all.
There are hundreds of these keyboards that are usually pretty easy to remember.
HOWEVER, when you go to Data, From Table or Alt,A,PT,Enter you enter a whole world of non-mnemonic keyboard commands:
Home = Alt,Y01, Transform = Alt,Y02,Add Column = Alt,Y03, and View = Alt,Y04.
Lower menus also use Y and the lowest commands don't have keyboard commands at all.