How do I use a Coinstar machine?

Could you please explain the process of using a Coinstar machine in detail? I'm not very familiar with the steps involved and would like to know everything from inserting my coins to receiving my cash or gift card. Additionally, are there any fees associated with using the machine? And if so, how are they calculated? I'd also appreciate it if you could mention any tips or tricks to maximize my return while using the machine. Thank you in advance for your help.