What is one area of Excel you want to learn more? [Survey]

What is one area of Excel you want to learn more? [Survey]:
It is almost weekend. Today we (Jo and I) are going to watch a cricket match being played in Vizag. We are pretty excited as this is the first time we are watching a match in stadium.
So, let keep this light and fun. I want to know What is one area of Excel you want to learn more?



I will go first. I want to learn more about Data Tables & Simulation.
What about you? Go ahead and tell us using comments.
Note: Here are a few choices if do not know what else is out there.

• Formulas
• Array Formulas
• Formatting
• Conditional Formatting
• Charting
• Advanced Charting
• Pivot Tables & Charts
• Tables
• Data Tables
• Validation
• Filters & Sorting
• VBA (Macros)
• Linking to Databases etc.
• Solver
• Statistical Analysis (regression, time series etc.)
• Scenarios, What if analysis
• Dashboards

So go ahead and tell us.