We tend to learn more in the process of building something. However, it is difficult for learners to get started with cloud computing. This book presents the reader with a practical guide, from creating multiple virtual machines to running PostgreSQL servers in master and slave mode on them, not trivial or too daunting. This book starts with virtual machines in VirtualBox on a personal computer (Windows 10, macOS or Linux) and covers those in the cloud (AWS, Azure or GCP). Through hands-on activities, this book will help the reader grasp important concepts (virtualization, virtual machines, hypervisors, automation, containers and networking) and tools (VirtualBox, Vagrant, Ansible, Wireshark, Docker and PostgreSQL).