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AReResearch - Andy Reischle: Espressif ESP-8266: minimal configuration for running the ESP-12e module
Getting Started with ESP8266 NodeMCU Development Board| Random Nerd Tutorials
ESP8266 - Wikipedia
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ESP8266 SMT Module [ESP-12F] : ID 2491 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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CentIoT - Espressif ESP-12F esp8266 SMD Chip - WiFi MCU Module for Internet of Things
ESP-12F WiFi Module Based on ESP8266 - Micro Robotics
How to program ESP8266-12E using Arduino IDE - Hackster.io