Note: You can use the sandbox to experiment with page editing.
As a new contributor, you may feel a little overwhelmed by the sheer size and scope of this project. Don't worry too much if you don't understand everything at first, as it is acceptable to use common sense as you go about editing. We encourage you to be bold in a fair and accurate manner.
The community portal is a central location to find collaborations, tasks, and news about Wikipedia. To find internal project pages of interest, see the department directory. If you do get stuck, there are volunteers available to answer your questions, see asking for help for more information.
Main introduction: the main introduction to Wikipedia, with many useful links.
Introduction to navigating Wikipedia: a five part guide to navigating Wikipedia. Introduction. Namespaces. Searching and redirects. Useful pages. Summary.
Introduction to editing: a five part guide to editing. Editing pages. Formatting. Links and Wikilinks. Saving your changes. Summary.
Introduction to referencing: a five part introduction to referencing. Verifiability. Inline citations. RefToolbar. Reliable sources. Summary
Introduction to uploading images: a six part guide on uploading images. Introduction. Free content. Non-free content. Wikimedia Commons. Using an image. Summary.
Introduction to tables: a four part guide to putting tables in pages. Introduction to tables. Creating tables manually. Sortable tables. HTML and tables.
Introduction to editing with VisualEditor: a five part introduction to editing with VisualEditor. Opening the editor. Toolbar basics. Links and Wikilinks. Saving your changes. Summary
Training for students: students start here! A four-part, 57-page, training intended for students doing assignments on Wikipedia, with more detailed introductions to core Wikipedia policies, editing basics, and more specific editing advice for students. Welcome (4 pages). The Core (14 pages). Editing (24 pages). Advanced and background (15 pages).
Training for educators: educators start here! A five-part, 97-page, training for professors and other educators who want to run Wikipedia assignments for class, with introductions to core Wikipedia policies, editing basics, and an overview of best practices for designing and implementing Wikipedia assignments.
Training for Wikipedia Ambassadors: Ambassadors start here! A four-part, 86-page, training for Wikipedia Campus and Online Ambassadors, with introductions to core policies and editing basics for those new to editing and an overview of best practices for Wikipedia assignments.
Guides
Plain and simple: the basic mechanics of Wikipedia. There are similar guides for:
Plain and simple non-free content guide - discusses how Wikipedia's copyright guidelines are probably the most complicated part of the whole site and breaks down what the rules are and what they mean.
Quick guides
Edit toolbar: how to use the edit toolbar while editing.
Media help: how to get media to work on your computer.