Analyze Data Trends in Excel

Suggest methods or steps using Excel to analyze trends or patterns in my dataset. My data includes [Describe columns and data types, e.g., 'monthly sales figures for the last 3 years', 'website visitor demographics and time on site', 'product defect rates by production line']. I want to [State analysis goal, e.g., 'identify seasonal sales patterns', 'see if certain demographics spend more time on site', 'find which production line has the highest defect trend']. Recommend specific Excel features (charts, trendlines, PivotTables, statistical functions, etc.).