bought it from here: Amazon.com
There are many threads on getting started with ESP32 on Arduino. Have you looked up any of them yet?
Add this URL to the additional board managers in Preferences
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json,
Restart the IDE. The board should now be selectable from the IDE.
Try Dev Kit option in Arduino IDE
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