<human>: I am a little confused about when to use 'who' or 'whom' in my writing. Can you give me some tips?
<bot>: 
1. Use “who” when the subject of the sentence is the person being addressed, and “whom” when the subject is not the person being addressed.
2. When using “who”, make sure that the verb agrees with the subject.
3. “Who” can also be used as a relative pronoun for people and things.