What is advanced? Think you need to be thinking along the lines of aligning your work and processes with what is required. Excel tools are really task related.
- are you talking about working with functions for data cleansing/extracting/summarising
- importing/exporting data into different formats
- summarising datasets with pivot tables
- automating tasks using macros - how far do you need to take this
- forecasting future budgets
- highlighting KPIs
- building workbook models
etc, etc, etc