How can I get rid of spam in Gmail?

Richard has Gmail and he keeps getting rid of junk email. Leo says that using Apple's Mail utility may not be working well with Gmail, or his Gmail filter may not be working right. Rather than just deleting them, Richard should go to Gmail.com and press the "spam" button on email that he doesn't want. Then Gmail will learn what he considers as spam and stop allowing it. Gmail's spam filters are very good at learning what is spam and filtering it out.