There are various free tutorials available for learning AWS. Among them, choosing the right one is the most difficult task because most of the tutorials don’t provide all the required knowledge. I would suggest you go for the one that covers all the concepts of AWS in an organized way that can help you gain a better understanding. For that I would like you watch this video -
This video will help you understand the various concepts of AWS. The knowledge you gain from this training gives you confidence that you can perform various tasks on the AWS platform. Also, with the help of this training, you can even clear the certification exams.