If you are preparing for an interview, first I would suggest that you have a better understanding of concepts, and for quick revision you can refer to cheat sheets and interview guides. Along with that, I would like you to watch the below video, which covers the most frequently asked questions by recruiters.
Go through this list of questions, which provides a better understanding of AWS interviews. Along with that, have a look at this AWS Certification Training Course offering by Intellipaat, which will help you become a skilled AWS professional.