ESP8266 ESP-12F
Documentation
The documentation for the ESP8266 ESP-12F can be found at: https://github.com/Nicholas3388/LuaNode
One of the most important documents is the Pinout Diagram: https://cdn.shopify.com/s/files/1/1509/1638/files/NodeMCU_Lua_Lolin_V3_Pinout_Diagram.pdf
For advanced users there is also a schematic (should not be required in the basic class): https://cdn.shopify.com/s/files/1/1509/1638/files/NodeMCU_Lua_Lolin_V3_Schematics.pdf
Related Tutorial Videos
How to write the micropython images on the ESP8266