A collection of case studies, white papers, articles, books, and other resources to help prepare you for a Google Cloud Platform certification or two.
- Cloud Certification Forum on Google Cloud Connect
 - Deconstructing a Customer Case: Cloud Architect Exam - Customer case analysis on JencoMart, MountKirk Games, Dress4Win and TerramEarth
 - Cloud Architect Practice Exam
 - Qwiklabs GCP Quest
 
If you interested in a particular topic, a good place to start is the Tutorials and Solutions section of cloud.google.com. Search by keyword or browse around. Otherwise, I've currated some of the articles I think would be helpful and added them to the lists below.
- Building Scalable and Resilient Web Applications on Google Cloud Platform
 - Site Reliability Engineering, e-book
 - How to Design a Disaster Recovery Plan
 - Microservices Architecture on Google App Engine
 - Best Practices for Enterprise Organizations
 - A developer’s toolkit for building great applications on GCP
 - Distributed Load Testing Using Kubernetes
 
- Google Cloud Platform Security
 - Google Infrastructure Security Design Overview
 - Encryption at Rest in Google Cloud Platform
 
- How to Lift-and-Shift a Line of Business Application onto Google Cloud Platform, pdf
 - How we built a brand new bank on GCP and Cloud Spanner: Shine
 - Quizlet Tests Cloud Spanner — The Most Sophisticated Cloud Database
 - Part 1 – The Evernote Service and our options to migrate to Google Cloud Platform (GCP)
 - Part 2 – Protecting Customer Data on GCP
 - Part 3 – The Evernote Architecture in GCP and our Technical Transformation
 - Part 4 – Planning and Executing the Migration
 - Part 5 – Conclusion and Future
 
Have you come across resources that would help others prepare for the exams? Submit a pull request!