I dont know exactly who macbeth kills right after duncan but At the very least, he is responsible for the deaths of Macdonwald, Duncan, the king’s guards, Banquo, Lady Macduff and her family and household, and Young Siward.
If I had millions and millions of dollars. I would use it to help the homeless. I would by them a house and clothes and all the stuff they needed. Help them get a job and get back to there feet. It makes me sad seeing homeless people.