Update: In Nov. 2016, AWS introduced a 5th pillar, “operational excellence” to their Well Architected Framework
I got my AWS certification in November. Since then, a lot of people have asked me about it. So here is a blog with suggestions and a review of the Udemy preparation course that I used. AWS has many certifications. The one I have is the AWS Certified Solutions Architect-Associate. I found the time spent on learning AWS to be valuable. Good luck!