Flash the latest nodemcu firmware to your ESP8266 wifi module and start coding in Lua.
NodeMcu Flasher:
https://github.com/nodemcu/nodemcu-fl...
ESPlorer IDE:
http://esp8266.ru/esplorer/
Firmware Binaries:
https://github.com/nodemcu/nodemcu-fi...
UART to USB Converter:
http://www.ebay.com/itm/FT232RL-FTDI-...
Schematic:
https://importhack.wordpress.com/2014...