Dev Stack Java Exploration

I'm looking for an expert Java developer who can assist me in exploring the Java development stack. The goal is to enhance my understanding and skills in Java, its frameworks, and libraries.

Key requirements:
- Extensive knowledge of Java and its ecosystem
- Ability to teach and guide a beginner
- Familiarity with various Java frameworks and libraries
- Experience in different types of Java development (web, desktop, mobile)
- Excellent communication skills