This repository contains NodeMCU application programs for ESP8266 devices running NodeMCU firmware.
Additionally you will find customized firmware versions built by http://nodemcu-build.com/.
A step-by-step introduction to NodeMCU on different hardware modules is published in "Building an IoT Node for Less than 15 $" available as print and Kindle ebook (Links are in the Wiki).
Please have a look into my blog https://cknodemcu.wordpress.com/ to get new information around NodeMCU and ESP8266.