Gretzky scored his first NHL goal on October 14, 1979 against the Vancouver Canucks. It was his third NHL game. http://www.oilersheritage.com/history/big_memories_gretzky_first_goal.html
Wayne Gretzky's record breaking goal was actually his 73rd goal but I don't remember who he scored it on.
Wayne Gretzky
Kevin Lowe, assisted by Wayne Gretzky and Bret Callighen
the forum
His first NHL goal was actually a penalty Shot so no assit. His first goal in a game was assisted by Glen Anderson and Jarri Kurr
Kirk McLean
Wayne Gretzky with 894
Wayne Gretzky
Behind the goal. Gretzky was so skilled behind the net, especially with his wrap around goals, the area became widely known as 'Wayne Gretzky's Office'.
Trick question- it was an empty nety goal
Wayne Gretzky scored his 894th and final NHL goal against the New York Islanders and goalie Wade Flaherty with 2:07 left in the 3rd period of the Rangers 3-1 victory on March 29, 1999.