Github/ESP8266/Arduino Read-Me http://arduino.esp8266.com/versions/1.6.5-988-gfd1d9da/doc/reference.html

Hackaday In depth look at chip http://hackaday.com/2015/03/18/how-to-directly-program-an-inexpensive-esp8266-wifi-module/#more-148943
Specifications, schematics: http://www.mikrocontroller.net/attachment/231858/0A-ESP8266_Specifications_v4.pdf
Wi07c - ElectroDragon
Seed Studio WiFi Serial Transceiver Module - Wiki
https://nurdspace.nl/ESP8266
wireless:esp8266 [Boxtec Playground] Range tests >300m, 4km with dish UBIQUII M2 dish
www.element14.com/community/people/Problemchild/blog/2014/09/29/esp8266-wifi-rangedistance-tests

Video with links Schematics ESP8266 WiFi Serial Module Costs Just $5
www.youtube.com/watch?v=9QZkCQSHnko
http://scargill.wordpress.com/2014/09/27/investigating-the-esp8266-serial-killing
A very good tutorial about upload to thingsspeak.com and firmware upload http://www.instructables.com/id/ESP8266-Wifi-Temperature-Logger/?ALLSTEPS
GCC toolchain, 10bit ADC(not useful when RF running) www.github.com/esp8266/esp8266-wiki/wiki
Cloud updating your Wi07C ESP8266 www.blog.electrodragon.com/cloud-updating-your-wi07c-esp8266-now
Interfacing with Teensy http://kaspars.net/blog/electronics/esp8266-teensy-arduino