I have seen a lot of these shorts on YouTube, and I can easily say this is a good show for preschoolers who are into Marvel's cast of heroes and villains.
Each episode follows a formula: A beginning usually has Spider-Man talking to the viewers about something he has trouble with, or he would encounter a couple of kids arguing about something. He tells them the lesson of the episode, and how he learned it during an adventure with another superhero from the Mavel universe, which cuts to a flashback where Spidey and the other characters are in chibi style (similar to Super Hero Squad Show), where Spidey is doing something with a random superhero (be it mainstream heroes lole Iron Man, Captain America, The Hulk, and Black Panther, to even other Spider-heroes like Miles Morales and Ghost-Spider), until a villain decides to cause trouble. Then it ends with it back with Spidey (with the same animation style as before the flashback), fixing the problem or helping the kids solve their problem using what they learned,
This is a neat cartoon for preschoolers. Not only does each episode teach a good moral, it also has some action, while devoid of the fisticuffs and other violence seen in the Marvel cartoons aimed at older kids, does involve the heroes using their powers to solve problems.