Detailed Review Of Preparation

In order to prepare for this exam it took me about 20 day. Because before this one I was preparing for Solution Architect. Those two exams are a little similar to each other. Before starting to prepare, I put some kind of deadline(it really helps). Some people even registers for a specific data(but you can always change it).

The first thing you should do is to create AWS account. And just get your hands dirty!

•  I have started learning with A Cloud Guru (https://acloud.guru). This guys explains very well. Make sure to take notes, at least exam tips. And try to do or understand all labs.
•  Then I was watching Youtube video courses from Denis Astahov at ADT-IT channel (https://www.youtube.com/channel/UC-sAMvDe7gTmBbub-rWljZg). This video course is in Russian. This channel gave a  knowledge not only in AWS, but also Jenkins, Ansible, Git, Docker. All of these tool are useful in Developer role.
• I have read AWS Documentations to learn about some services.
• AND DO THE LABS!

I hope my little article will help you! GOOD LUCK!!