Single electromagnetic pulses like lightning, ESD, powerline transients, NEMP, etc., are generally described in time domain, while filters and shields are practically always characterized in frequency domain. This article describes a quick and handy formula and nomogram providing a fair estimate of the filter or shield response to a conducted or radiated threat.
For the novice, this book provides many friendly illustrations of EMC and EMI mitigation. One should, however, dig a little deeper into the physics of the issues of EMC. That is the core of this book: Physics Matters.