We have a few good resources for you to get started with Nu.
At the bottom of this page you can also find quick references to the commands provided by Nu Shell if you need quick support.
You can read our book to lern more about the core concepts behind Nu. It covers the basic and contains a lot of examples which will help you to have an easy start.
In the contributers book you can find further information. It attempts to cover the basics of how Nu works internally, to get a solid understanding. You will learn how data is treated, what kind of data types Nu supports and how you can write plugins for it.
Nu Cookbook is a collection of examples to help you get the most out of using Nushell. It offers multiple ways of expressing the same pipelines so you can become familiar with all the commands.