This document discusses key concepts in advertising media and media planning. It defines advertising media as the vehicles used to carry advertising messages, and outlines various print, broadcast, outdoor, and other media types. It then explains that media planning involves decisions about promoting products through different media. The planning process considers reach, frequency, and continuity. Reach refers to the total number of potential viewers or readers exposed to a message. Frequency is the average number of times a viewer sees the message. Gross rating points indicate the total potential audience reached by a media schedule.