Please watch this video - https://www.engvid.com/conversation-skills-wh-questions/
Questions with these words cannot be answered with a "yes" or "no." The person asking is looking for more information.
Who . . . ? - "who" asks for the name of a person or the names of two or more people.
Who is that guy?
Who are they?
What . . . ? - "what" asks for the name of a place or things, or names of places and things
What is that?
What are these things?
When . . . ? - "when" asks for a time (hour, day, date, year)
When are you coming?
When is the movie starting?
Where . . . ? - "where" asks for a place
Where do you live?
Where are they going?
Why . . . ? - "why" asks for a reason
Why did he do that?
Why did she say that?
How . . . ? - "how" asks for the way something is done
How did you do that?
How is she going to get there?