You are in the correct part of the forum. Have you learned
JDBC while you were learning Java SE? If not, learn that. The next framework I think should be Spring. It's heavily used in industry. And the concepts will help you with both
EJB and Spring.
Also, what is your goal? At some point presumably you want to get a job. Or maybe you are a student and want to get a job after you graduate. The answer to this question may get you more targeted advice. (For example, I'd recommend looking for an internship if you are a student.)