This computer-aided learning program presents a number of chapters to help students learn about issues surrounding generation and analysis of digital geophysical data. Chapter 1 is a preface to the program. Chapter 2 deals with recording quality digital data. Chapter 3 deals with spectral analysis of data including Fourier Analysis. Chapter 4 examines the connection between analysis and filtering of the data. Chapter 5 looks at signals and waves, and Chapter 6 provides appendices of relevant information.