What do I have to start to learn Java?

Hey guys,
I am a coding school student and have been learning Java for the last three months every day for more than 8-10 hours!
It's already been over 5000 hours since I studied programming.
(Check out my insta! @agilemeadow)
Still a noobie, but for those who want to start the programming journey, I brought what I did in my very first month.

I would be very happy to hear your new idea for improving my must-know list.

• Data types
• Variables (regional variable, member variable, static variable)
• Operators
• Control statement (condition statement, repeat statement)
• Auxiliary control statement (break, continue)
• Call Methods (Call by Value, Call by Reference)
• Arrays
• classes, objects, constructors, methods
• Access Controllers
• Date, Timestamp, Calendar
• String-related classes (String, StringBuffer, StringTokenizer)
• Inheritance (Member variable, method, constructor)
• Abstract classes, interface
• Collection, Generic
• List, Map
• Transform data type
• Basic data type conversion ex) double <---> int
• Data type conversion using a wrapper (basic data type <---> reference type)
• ex) int <---> String Wrapper Class (Boxing and Unboxing)
• int n = Integer.parseInt("20");
• Reference Type Transformation
• Exception handling
• Thread
• java.io.* (BufferedReader, FileReader, FileWriter, File)
• java.net.* (Socket Communications)
• java.sql.* (Database interlocking)