--- title: MDN user guide slug: MDN/User_guide tags: - Documentation - Landing - MDN - NeedsTranslation - TopicStub translation_of: MDN/Tools ---
The Mozilla Developer Network site is an advanced system for finding, reading, and contributing to documentation and sample code for Web developers (as well as for Firefox and Firefox OS developers). The MDN user guide provides articles detailing how to use MDN to find the documentation you need, and, if you wish, how to help make the material better, more expansive, and more complete.
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