Book excerpt: The Personal Digital Resilience Handbook is the essential guide to making your technology resilient - that is, reliable, robust, secure, private, and under your control. Technology is a vital foundation of our lives, and when it fails there can be devastating consequences like losing important files or having personal data stolen. If you feel like you are driving at 90mph on this technology freeway without a seatbelt and want to get some safety and control back, this book is for you. The first four chapters explain in easily-understandable detail how to make your computer and smartphone resilient, keep your files backed up, and use the Internet in a reliable, secure and private way. At the end of each chapter is a checklist you can use to measure your progress. Chapter five covers advanced topics for those who want to go a step further, including threat modeling, Linux and open-source software, an open-source smartphone, off-grid communications, Knowledge Reboot Kits and deleting your digital trail. Are you ready to be digitally resilient?