List of Beavis and Butt-Head episodes – Wikipedia

No. overall No. in season Title Directed by Written by Original air date; 1: 1 “Door-to-Door” J.J. Sedelmaier: Glenn Eichler and David Felton: March 8, 1993 (): Mr. Van Driessen gives the class the assignment to go door-to-door to collect for charity, and while collecting, Beavis and Butt-head run into a scary donor: Mistress Cora Anthrax.This was the first episode of the series to air.

https://en.wikipedia.org/wiki/List_of_Beavis_and_Butt-Head_episodes