The phrase points to the availability of complimentary digital textbooks in Portable Document Format, specifically designed to aid individuals preparing for the General Educational Development (GED) exam. These resources provide accessible study material covering the core subject areas tested on the exam, such as mathematics, science, social studies, and language arts.
The significance lies in democratizing access to educational resources. Preparation materials can be financially prohibitive for some. Offering these materials without cost removes a significant barrier, allowing a broader segment of the population to adequately prepare for the GED exam, improving their chances of success. Historically, physical books were the primary means of preparation; the digital format allows for wider dissemination and ease of access.