Diode Calculations Tutor Needed

I'm currently working on a set of exercises involving diodes, specifically standard and Zener diodes. I need a professional who can guide me through these calculations step-by-step.

The ideal candidate should:
- Have a strong understanding of diode equations and calculations.
- Be able to clearly explain the concepts behind the calculations.
- Provide a step-by-step solution to each question.

Experience with teaching or tutoring in electronics or electrical engineering would be a big plus.