In this lecture, we will create a simple phone book web using Ionic and CouchDB, which are currently the most optimized for PWA development, and explain how it can work offline through the construction process.

Tutorial on creating email/password user authentication using Ionic 3 + firebase

This ionic3 course is very helpful not only to developers with ionic development experience, but also to beginners without ionic development experience, as it provides comprehensive information on the overall ionic project structure and development methods.