Jordan was the best 2 in the league from the first appearance he made on the court. He refined the enormous talent he was given so that his shooting, passing etc. were a little better. A little. But he didn't "develop" or "learn" that talent while already in the league. No one develops or learns talent. They have what they have, and that's that. Jordan dominated because it was in his nature to do so. Just look at the numbers. 14 win shares, and a 25.8 PER in his rookie year. Second highest PER in the league as a rookie, behind Larry Bird, ahead of Magic, Kareem et al.
BTW Jordan didn't dominate the L from game 1. He was a very good volume scorer who relied on athletic ability at first. He learned (over the following 5 years) how to shoot with range, how to incorporate the passing game and most importantly how to defend. He wasn't GOAT right from the get-go.