Tweaking4All.com - Getting started with the ESP8266 as an Arduino replacement
NodeMcu (ESP8266) Tutorial A-02: Blinking internal LED - YouTube
MakerFocus 2pcs ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WiFi Development Board Serial Wireless Module Internet for Ar duino IDE/Micropython with Free Adapter Board for ESP8266 ESP-01 and nRF24L01+