Here are the downloadable versions of B&K's excellent series of booklets on basic noise and vibration measurements.
Measurement Microphones
An introduction to the design features and operating principles of measuring microphones.
Measurements in Building Acoustics
Answers some of the basic questions asked by the newcomer to building acoustic measurements.
Measuring Sound
Answers some of the basic questions asked by the newcomer to a noise measuring programme.
Measuring Vibration
Answers some of the basic questions asked by the newcomer to vibration measurement.
The following three are more advanced.
Sound Intensity
Explains the fundamentals of sound intensity measurement. Both theory and applications are covered. Although intended as a basic introduction, some knowledge of sound pressure measurement is assumed.
Structural Testing Part 1: Mechanical Mobility Measurements
A comprehensive introduction to the theoretical background to modal analysis and structural dynamics.
Structural Testing Part 2: Modal Analysis and Simulation
A comprehensive introduction to the theoretical background to modal analysis and structural dynamics.