How to know when when a Wikipedia article was last updated ?

Answer I believe it says down at the bottom of the web page.

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How do you check when an article on wikipedia was last updated?

You click the "view history" tab, it should be close to the upper right corner of the page. The most recent change is shown first, then the rest in backwards chronological order all the way back to... Read More »

My Wikipedia article has not deleted past 7 days, wikipedia will delete my article?

'Some warning message' is pretty vague. Follow the instructions on the warning template to find out what to do. If it is a deletion template, it could be any of four different types:* PROD (propose... Read More »

If you provide reliable sources to an article or talk section of an article on ...?

You need reliable sources to back up your facts. Part of a movie or video may be a reliable source (yet a primary source), but should never be uploaded; it would violate the copyright of the movie ... Read More »

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