O'Reilly Guide - Introduction to AWS IaaS Solutions

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Chapters Guide and Additional Resources
Links and goodness to go along with the eBook:
AWS Glossary - All things AWS here to help you learn nomenclature and definitions - https://docs.aws.amazon.com/general/latest/gr/glos-chap.html
AWS whitepapers - Great guides including the security and WAF guide which are must-reads both for day-to-day operations and especially if you want to get certified on AWS - https://aws.amazon.com/whitepapers/
We discuss many features of networking and security in brief. There are some content areas that did not get covered due to the page count, so I highly recommend digging in on these:
Network ACLs - These are important for protection your cloud assets. Blogs coming on these and more to target the more granular controls available with NACLs - https://docs.aws.amazon.com/vpc/latest/userguide/vpc-network-acls.html
Recommended NACLs - Simple guide with the top-recommended rules to apply based on a few common scenarios - https://docs.aws.amazon.com/vpc/latest/userguide/vpc-recommended-nacl-rules.html
EC2 Instances at EC2Instances.info - a nifty resource that is maintained online to highlight differences in features in EC2 - https://ec2instances.info
Other handy links to keep for AWS info
Open Guides for AWS - A GitHub-hosted resource that holds community-contributed guides to AWS features and products - https://turbonomic.com/blog/on-technology/the-open-guide-to-amazon-web-services/