Keithley Instruments (Cleveland, OH) has released a free tutorial CD that offers practical and helpful techniques for obtaining the most accurate and precise measurements possible using advanced electrical test instruments and systems. The A Guide to Understanding Electrical Test and Measurement CD covers aspects of measurement performance such as how to troubleshoot, how to connect, how to select instruments, and more. It also contains a large number of application notes, white papers, and webcasts on a variety of test and measurement topics. Instrument options cover digital multimeters, source and measure instruments, and function/pulse/arbitrary/pattern generators. Application examples range from accelerated stress testing to wireless device testing.