I want to learn HashMap – Java + Python tutor needed

I’m trying to HashMap myself. After reading the API/Tutorial’s online, I found it pretty hard and confusing. I need someone to explain the whole concept about HashMap to me in a clean way so I can understand them better.Requirements:1) You need to be a experienced Java/Python tutor2) I need to Google Hangout with you for an hour so you can explain the concepts to me and make sure I understand all of them. After that, I have 5 small exercises in my textbook, I will finish them and you need to help me review them and make sure I have the right solutions.(Explain to me if my answers are wrong)