This is exactly what you think it is. It’s The Godfather except its a novel and it came first before the movie. I happened to pick it up in a second hand shop back in the day.
1, Is it good? – yeah, it’s really good. It follows the Corelone family through mob wars in New York with four other families until everyone who is an enemy is dead and whomever is still alive all move to Las Vegas. It pulls you right into the world of the Corelones and makes you feel like you’re part of the group. It’s worth nothing the book was published in 1969 but optioned to Paramount for filming after a literary scout found it in 1967 while it was being shopped around to publishers, and the film was released in 1972
2. Is it like the movie? – Yes. Mario Puzo wrote both the novel, screen play and various other production notes for the movie so everything tracks. The scene with the oranges is in the movie and so is the cannoli thing. It’s not like you’re going to pick up the novel and go “Wait? What?! How did they not put this in the movie?!”. The author did all of it to the point that Coppola ripped pages out of the novel, stuck it in bits of his script to combine the two into a super manual on how to film the story.
3. Should I read it? – Yes. If you like the idea of The Godfather but don’t want to sit through a million hours of film (lets be real it’s what it feels like) then yes, read it. Read it if you want to see what the hype is about. The language is easy to read and the smatterings of Italian in it are explained so you don’t feel lost in. It doesn’t drag either so everything feels really punchy. I mean it’s only 448 pages so it’s really really portable. It’s really really enjoyable and even you couldn’t give 2 fucks about the movies it’s worth it as just a good damn book.