Redeeming my All Global Circle balance

• How does All Global Circle Reward system work?
• What kind of rewards are available?
• How do I check the balance of my All Global Circle account?
• How do I know I placed my order correctly?
• I can’t complete my order. What should I do?
• I don't have a PayPal account. How does the PayPal option work?
• I already have a PayPal account with a different email address. What should I do?