Wikibooks
Wikibooks, like Wikipedia, is a tremendously valuable program that collects and repurposes knowledge and experience from around the world into a single, easy-to-digest library. This open-source approach, like Wikipedia, is also its academic kryptonite: because anybody may update the material, it needs more intellectual credibility.
However, Wikibooks is an excellent beginning place for understanding specific concepts or topics, particularly in the STEM and social sciences sectors, and the language learning tools are extremely helpful. Overall, this is an excellent tool for expanding your own expertise in specific academic disciplines, but if you plan on mentioning anything, you should go to your school library first.
Wikibooks divides textbooks into eight primary areas, which are then further subdivided into more particular subjects in a hierarchical fashion. Each subject page corresponds to a particular field of study, such as mathematics, computer science, or history. Wikibooks organizes books into alphabetical, Dewey-Decimal, and Library of Congress classification groups, which can be explored separately from the subjects.
Wikijunior, a Wikibooks subproject, contains books for children aged one to twelve. Wikijunior books cover a wide range of topics and are written exclusively for youngsters. Some Wikijunior books are designed to supplement a classroom learning environment. However, many books can also be used for at-home learning between parent and kid.
Website: https://www.wikibooks.org/