Excel Dashboard Simplification

I need an Excel expert to simplify a financial tracking Excel file. The goal is to make data entry easy and error-free.

Requirements:
- One user-friendly data entry sheet
- Error prevention and data validation features
- Dashboard with:
- Charts and graphs
- Summarized reports
- Expenditure tracking using pivot tables, lookups, and arrays

Ideal skills and experience:
- Advanced Excel proficiency
- Experience with creating dashboards and data entry sheets
- Strong understanding of pivot tables and data validation

Please ensure the existing data tracking methods and formulas can be improved and simplified.