Tip of the moment...
Check your work before you save, using Preview

When you edit a page, you can use the Preview button (located right next to the Save page button) to see in advance what your edits will look like. This lets you check your work periodically without filling up the page history by making lots of smaller edits. The preview function can also help you avoid mistakes, such as when using an unfamiliar type of wiki markup. The preview will appear together with the edit box you have been working in (either above or below it, however you prefer).

An even faster way to preview a page is with the keyboard shortcut ⇧ Shift+alt+P.

Read more:
To add this auto-randomizing template to your user page, use {{totd-random}}

As a new editor you may be wondering, "How can I help?" and be overwhelmed by the extent and scope of the entire Wikipedia project.

An introduction for new contributors is available at Help:Getting started which provides a self-guided road map of tutorials, introductions, training topics and other resources allowing you to learn more about how you can help improve the Wikipedia project.

To add this auto-updating template to your user page, use {{totd}}