bitluni | ESP8266 Serial Interface to WiFi @bitluni | Uploaded September 2015 | Updated October 2024, 1 week ago.
This tutorial shows how to connect the ESP WiFi module to a Serial adapter (FTDI), connect to an access point and perform an HTTP request.
Page with AT commands:
wiki.iteadstudio.com/ESP8266_Serial_WIFI_Module

Links to the parts (I get small cut at no extra cost for you):
You can get the ESP modules here:
http://s.click.aliexpress.com/e/m6YnIaeIQ
http://s.click.aliexpress.com/e/2zRFuVRFA
ebay.to/2dzyQPv
amzn.to/2dnMG6N

Music cc-by:
_ghost - Cold Theme
ccmixter.org/files/_ghost/25388
creativecommons.org/licenses/by/3.0