Some digital publications are offered as monthly magazine subscriptions, while others are intentionally developed as free material and are monetized through advertising or utilized for (content) marketing as digital magazines, reports, ebooks, or catalogs. The type of revenue they generate depends on how they are structured and marketed. Digital publications can be useful tools in both educational and professional settings. They can help individuals keep up to date with current events or learn more about a particular subject. Digital publications also make it easy to compare information from different sources, such as news articles, books, and academic journals. In education, digital publications are often used by teachers to communicate important information to their students. For example, a teacher may use an ebook to explain concepts related to science that would otherwise be difficult to convey in class. In this case, the ebook would replace part of the usual teaching materials (e.g., PowerPoint presentations). Students could then explore these topics at their own pace by reading relevant sections of the ebook. Professional settings also benefit from the use of digital publications. For example, a law firm could produce a monthly update emailing summaries of recent court cases involving their area of practice. This would allow them to stay informed about issues affecting their industry and to share this information with their clients.