Here are the takeaways from the win for Eddie Howe's side.
Newcastle should be pushing for European football this season
Forest couldn't lay a glove on Newcastle's defence, but even when they got close, their defenders were there to close any gaps, giving new goalkeeper Nick Pope nothing to do throughout the game.
Bruno Guimarães is the complete package
No wonder the Brazilian cost £40 million. Of all the Newcastle players on the pitch, Guimarães was either top or joint-top for successful passes (64), dribbles completed (5), tackles (3), ground duels (12), fouls won (4) and chances created (3).
The 24-year-old was everywhere, and Newcastle’s entire possession game revolved around him. He recycled the ball, progressed the ball and even created shots for himself and his teammates.
His stellar touches and subtle through balls overwhelmed Forest throughout the game and with Joelinton impressing alongside the Brazilian, it was clear that the midfield was Newcastle’s biggest strength in the game.
Forest need to gel
Throughout the entire game, one thing stood out in particular: Forest's lack of cohesiveness.
With six debutants in the starting lineup and two coming off the bench, the team was never going to gel quickly, especially in such an intimidating stadium.
Whether it was nerves, a lack of cohesion or just the sheer quality of Newcastle, or a bit of everything, Forest’s retention of possession was poor throughout.
However, there were periods of the game when communication between players improved. Although the shot was soon blocked, Lewis O'Brien did brilliantly to retrieve the ball in midfield and find Jesse Lingard between the lines.
Steve Cooper knows what he wants out of his players, and with five loanees last season, it didn't take long for the team to gel and gain an understanding, so it's not out of the question that it will happen again this season.
Forest will need to come together fast, though, as there are eight fewer games and much more merciless opponents in the Premier League.
Home form will be key for Forest
An away day against a team that is currently flying was never going to be the ideal way to kick off Forest's first Premier League season in 23 years.
The Reds earned 43 points out of a possible 54 at home under Cooper last season. They also beat Arsenal and Leicester City at the City Ground in the FA Cup before narrowly losing 1-0 to Liverpool in their own stadium.