What is accounts receivable?  Is it good?

Anne Marie, the owner of Anne’s Beauty Salon continues to ask you questions about her financial statements.

1. What is accounts receivable?  Is it good?

2. I see these things called current assets and current liabilities. What are they ? Why show them?

3. I still don’t understand what the statement of retained Earnings is all about and why do I need it? What is retained earnings? What is that thing called a dividend? Is it an expense?