Set your browser home page to random Wikipedia page

To learn something new every time you open your web browser, you can set your browser home page to random Wikipedia page. 

Open Safari Preferences > General and enter the URL: http://en.wikipedia.org/wiki/Special:Random into the Homepage field. Setup “New windows open with” and “New tabs open with” to point to Homepage. You will get a random Wikipedia page when you next open a new window or tab.

Set your browser home page to random Wikipedia page

You can also narrow down the random selection from within a given category. Use the URL https://en.wikipedia.org/wiki/Special:RandomInCategory/ follow by the name of the category.

For example, to get a random article in the Computer Science category, the URL is

https://en.wikipedia.org/wiki/Special:RandomInCategory/Computer_science

To get a random article in the Personal Finance category, the URL is 

https://en.wikipedia.org/wiki/Special:RandomInCategory/Personal_finance

Click this link https://en.wikipedia.org/wiki/Special:Categories to see the list of categories available.