Beginners Guide to ESP-01 | Arduino IDE | ESP8266
Getting started with ESP boards, well then ESP-01 may be your first choice. This video will guide you on how to upload program in ESP-01 using arduino IDE.
Additional boards managers URL's for ESP8266, ESP32 and RPI pico ( Copy and paste the entire content given below as it is ) : -
https://raw.githubusercontent.com/esp..., https://arduino.esp8266.com/stable/pa...