Congratulations !! You have chosen this course. So you are already ahead of so many peoples. I will not bore you by saying about exam and evaluation process as you already know this and TIME is too precious. Here, I will directly share my experience of passing the exam instead of explaining whole process. So let's get started. This exam will assume that you already have associate-level knowledge of AWS (It's not prerequisite but still best practice) and some knowledge about Security is also good to have. Then, when you start preparing, go through deeper in services given in AWS's guide. But don't take too seriously what it recommends (5 years of experience), I have 1 year of industry experience and I have passed the exam by hard work.