Other have great recommendations. Two of mine: 1. The Java Programming Language book: The K&R of Java https://www.amazon.com/Java-Programming-Language-4th/dp

Other have great recommendations. Two of mine: 1. The Java Programming Language book: The K&R of Java https://www.amazon.com/Java-Programming-Language-4th/dp/0321349806 https://www.amazon.com/Java-Programming-Language-4th/dp/0321... 2. Zantorc's videos: https://www.youtube.com/@Zantorc/ https://www.youtube.com/@Zantorc/ He really gets into the nitty gritty. You can listen to this while commuting, etc; Just finish 1 video per 3 days, say. It adds up quickly.