I used to get a lot of queries on AWS learning path and exam preparation procedures via emails or chats. Honestly I am not an expert (now) to advise on which track you need to follow; all depends on your target, like you want to go for an architect role or become a DevOps specialist. AWS is offering multiple level and streams of certifications for developers, architects and DevOps; see below for a quick overview on the certifications AWS is offering.
Read AWS Certified Solution Architect – Associate – Learning Path and Certification.