Excel Workbook Repair and Tutorial

I'm seeking a skilled Excel expert to troubleshoot and repair my complex Excel workbook. The issues primarily pertain to intricate multi-step formulas affecting the entire workbook. Post-repair, I would appreciate a detailed walkthrough of the fixes implemented.

Ideal Skills and Experience:
- Proficient in Microsoft Excel, particularly complex multi-step formulas
- Strong troubleshooting and problem-solving skills
- Excellent communication skills for clear explanations