Monica,

Tab through the choices to get familiar with them. Among them are:

Ignore, meaning skip this single instance because you intended what  you wrote there.

Ignore all, meaning each time this word turns up in this document, don’t  change it.

Add to dictionary, where the word is permanently added and will be accepted in all documents, not just the current one.

Change. Here, a shift-tab should bring up a list of alternatives. Arrow down to the correct  one and confirm by tabbing to “change” and pressing spacebar.

Change all. This is nice because it saves you from having to make the same correction in the document over and over.

Shortcuts include “c” for change, “l” for change all, “I” for ignore once, “g” for ignore all, and “a” for add to dictionary.

Some quirks:

On my system, I must press alt with the desired single-letter shortcut when I’m in Outlook 2016. So, instead of tabbing to change, I press alt-c when the correct option appears. However, I mustn’t press the alt key when I’m in Word 2016: just the single letter.

Another quirk: sometimes Word intrudes with an explanation of why it doesn’t like what it sees. When this happens, I’m not always aware of it. when I suspect that’s what’s going on, I press insert-numpad 8 to read the current line. I hear the explanation, press escape, and I’m returned to the tabbed choices.

I hope these notes help get  you started.