This document provides an overview of a corporate finance course taught at ETH Zurich during the winter term of 2009. It includes the course schedule, instructor biographies, learning objectives, and an outline of the ratio analysis lecture. The ratio analysis lecture aims to teach students the importance and use of ratio analysis in evaluating company performance and financial position by analyzing key metrics in the financial statements. It covers different types of ratios such as liquidity, asset management, debt, and profitability ratios.