There are many great courses available to learn SAP ABAP in 2023. Here are a few of the best:

• SAP ABAP Fundamentals by Udemy: This course is a great introduction to the SAP ABAP programming language. It covers the basics of ABAP syntax, data types, and statements.
• SAP ABAP for Beginners by Pluralsight: This course is another great option for beginners. It covers the basics of ABAP programming, as well as more advanced topics such as object-oriented programming and database access.
• SAP ABAP Certification Training by SAP: This course is designed to help you prepare for the SAP ABAP certification exam. It covers all of the topics that are covered on the exam, and it includes practice exams to help you prepare for the real thing.

If you are serious about learning SAP ABAP, I recommend taking a course that is certified by SAP. This will ensure that you are learning the material that is relevant to the SAP platform.

In addition to taking a course, I also recommend practicing your skills by working on real-world projects. This will help you to solidify your understanding of the material and to develop your skills as an ABAP developer.

Here are a few resources where you can find real-world projects to work on:

• SAP AppExchange : The SAP AppExchange is a marketplace where you can find SAP-certified applications and extensions. Many of these applications are open source, which means that you can download them and work on them to learn more about SAP ABAP.
• SAP Developer Network : The SAP Developer Network is a website where you can find resources for SAP developers. This includes code samples, tutorials, and forums where you can ask questions and get help from other developers.

Learning SAP ABAP can be a challenging but rewarding experience. By taking a course and practicing your skills, you can develop the skills you need to be a successful SAP ABAP developer.