KnowFree (KF) is a web portal with a slogan: "KNOWLEDGE IS FREE"�, so it is place for users to exchange freely e-books, video training and other materials for educational purposes, self-practice only. This was started from early 2006, and has spent many periods of development . On KF, you can download everything for free of charge, so you CAN'T sell, or use it for any commercial purposes. Moreover, all of materials here, are really hard works from someone else, you should appreciate, respect the authors and buy with your money if they could help you earn money or improve your career. Finally, you enrich the amount of types and quantities of things on KnowFree.org, you are welcomed to contribute your stuff.
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