The former Lyon star made a blistering start to his Arsenal career as he scored his first goal inside two minutes during the 4-3 win over Leicester on Friday.
His bullet header gave Arsene Wenger's side a superb start, although the Gunners left it late to grab all three points in the end.
Olivier Giroud stepped off the bench to seal the victory and Lacazette admits it was a great experience to play at the Emirates.
Despite his goal, the 26-year-old insists he will continue to work on his game going forward.
He told the club's official website: "Scoring on your debut with your first chance is pretty good going.
"I think it was still too early. That's how it came about but I think it was perhaps too early to celebrate because we didn't know how the match was going to pan out.
"It was a rollercoaster ride but it went well," he added. "Obviously I'm still getting used to the English game, the positives and negatives, shall we say, but I'm learning. It's interesting.
"It’s different to the French league, but I knew that already. It’s up to me to adapt."