SharePoint Dev PnP
SharePoint Framework - Getting started
While SharePoint Framework has been around for a while now, it could be that you're just starting with it. Here is the easiest way to get going.
SharePoint CRUD operations in SharePoint Framework client-side web parts
Learn by example: sample SharePoint Framework client-side web parts illustrating SharePoint CRUD operations published by SharePoint Patterns and Practices.
Converting existing JS apps to SharePoint Framework - SharePoint Dev PnP Web Cast
Learn how to migrate your existing client-side SharePoint solutions to the SharePoint Framework. Based on a sample Web Part built using Angular.