Considerable time has been spent examining how groups like AQAP and ISIS used their online magazines to reach and radicalize individuals in Western democratic states. This paper continues this investigation but shifts its analysis to focus on the ‘how-to’ or instructional content of these publications, an understudied part of the literature. One of the stated goals of these magazines was to provide tactical know-how and assist supporters conducting terror plots in their home states. The question: did the tactics outlined in the magazines materialize in actual plots/attacks and how quickly were they put into practice? The paper examines this question by creating an overview of the tactics which appear in these publications and cross referencing them with a dataset of 166 Islamist-inspired homegrown terror plots/attacks in 14 Western democratic states to determine if, and when, they first appeared in relation to their publication date. It concluded that while some of the suggested strategies did appear following their publication, often it occurred after considerable time had elapsed. This suggests the instructional content did not resonate with readers in real time.