Here you can digest how to use Wikipedia in bite-sized morsels. The tips listed below were created for the Tip of the day project, or the Styletips project, but are listed here by title and organized by subject area for your convenience.
Special:MyPage is a special link that is dynamically linked to the current user's userpage. So, whoever clicks on it will be taken to their own user page.
If you add a subpage to the link, then only you will be taken to your subpage of that name. Other users will be taken to the subpage of that name in their namespace (if it exists).
This makes the link "private" by only letting the correct user get to the page via that link. Other users will diverted to their own userspace.
The code [[Special:MyPage/To-do list|To-do list]] creates this: To-do list.
However, this only makes the link private, not the page itself. Others can still get to it via the search box or by creating a new link with its entire title.
Have you ever been frustrated that you are limited to viewing 500-edits in View-History for pages?
Solution to see more edits:
On any page with more than 500 edits...
Click on that page's "View History" tab
Click on the "|50)" wikilink just above and to the right of Compare selected versions
Go up to your web browser's address bar and change limit=50 in the URL to any higher number (N) up to 5000, for example: limit=2500
Press ↵ Enter or hit "go"
Go slow with "N", until you know what your web browser and computer can handle. If you get greedy your computer and browser may lock up. After the page fully loads you can use your browser's search feature to find what you are looking for or you can scroll down the page. As a bonus, your "next" choice will now offer next-N instead of next-500.
Bonus tip #1: The same process works in "Contributions", and on the search results page. Bonus tip #2: If you prefer, you can tweak the web address (URL) on a view history page to go back from a specified date, which is useful for looking way back in long histories. In your browser in the URL after "&action=history" add "&offset=YYYYMMDD", where YYYY is the year, MM is the month, and DD is the day. Then press ↵ Enter or hit "go".
For a listing of current collaborations, tasks, and news, see the Community portal. For a listing of ongoing discussions and current requests, see the Dashboard.