The easiest way to get started with NativeScript is to use the NativeScript Playground. You can build your first NativeScript application in less than 3 minutes and run that application on your own device. You can drag and drop components, add business logic and even share a link to your project with others, kinda like JSFiddle.
Also, we provide two tutorials to help you get up and running with NativeScript—Getting Started with NativeScript and JavaScript, and Getting Started with NativeScript, TypeScript, and Angular 2.
You can also check out our resources page, which lists out alternative learning material, such as NativeScript books, free NativeScript courses and other helpful resources.