There is a set of about 90 Wikipedia:Special:xyz pages - e.g. Wikipedia:Special:MostLinked. See:

• Help:Special page for a neat list, with descriptions,
• Special:SpecialPages for the list you get when you click anytime on 'Tools > Special pages' on the left-hand side of any WP page (without descriptions), or
• a full search list here.

Here's a colour. Here's another.

Adding {{Image requested}} to an article's talk page produces:

See Template:Image requested for documentation re using the above & allied media-requesting templates.

However, it seems best to use extra parameters, as in this suggested improvement.

Get emoticons like by using various images at Emoticons (or smiley for short). And, you can make them bigger:
However, others may be better, e.g. this 'blushing' one: . And there are many more useful [emot]icons here.

Archive my Talk page  Done (Use template:Done to produce this Done + tick). Also, icons like this - Note: - are described here.

Warning msgs. , and again in a colourful table.

Wiktionary links. See also {{wiktionary redirect}}, as in the WP article brickbat,

and over 1,000 others also in Category:Redirects to Wiktionary.

Some more:

• oxlyrics.com gives: oxlyrics.com: Linksearch en - meta - de - fr - simple - wikt:en - wikt:fr • MER-C Cross-wiki • Reports: Links on en - COIBot - COIBot-Local • Discussions: tracked - advanced • COIBot-Local - COIBot-XWiki - Wikipedia: en - fr - de • Google: search • meta • Domain: domaintools • AboutUs.org • Live link: http://www.oxlyrics.com

• 123.24.78.24 gives: 123.24.78.24 (talk • contribs • deleted contribs • blacklist hits • AbuseLog • what links to user page • COIBot • Spamcheck • count • block log • x-wiki • Edit filter search • WHOIS • RDNS • tracert • robtex.com • StopForumSpam • Google • AboutUs • Project HoneyPot)

AnyUserName gives: AnyUserName (talk · contribs · deleted contribs · logs · filter log · block user · block log)

Template:Archiveme adds friendly msg. to talk pages with >10 sections.

Can we rid WP of "will likely"? See User:Trafford09/AWB-WL. (Note use of template:search link.)

Template:flatlist ...

Template:Colour enables you to make text green, purple! or indeed any colour.

See Web_colors#X11_color_names for the whole range of colours.

(Don't use {{!xt2|make text red}}, as it does so on a new, indented line.)

See the disambiguation page Ubuntu, where both the following templates are used. Both templates have further parameters:

• {{Lookfrom}} searches for page titles which start with given words, and
• {{Intitle}} searches for pages which contain given words anywhere in their title.

Template:dynamic list produces this:

Sometimes people cite references even in Talk pages, which causes problems unless one uses say template:reflist-talk; see Talk:Go (game)#Women_players for an example of its usage.

Today, there are 847 Administrators - see Help:Magic_words for more.

See these (as used in AIUI):

• {{wiktionary redirect}}
• {{Wikidata redirect}}

To warn not to include WP:Red links, see Template:Editnotices/Page/List of Argentines. See also WP:TIPS, and then in this order:

• Template:Editnotices/Page/Martínez_(surname)
  
• WP:EDNO
  
• WP:TPED
  
• Template_editor#Use et cetera.

Wikipedia:Suggestededit-add 1.0 explains why some edit summaries have this (un?)helpful summary, and ...

... mw:Suggested edits sheds further light on that, and ...

... User_talk:Enterprisey#User_HHHHHYYYY shows when I queried a (ro)Bot expert regarding this, and ...

... User:Qwerfjkl kindly gave more info.. I guess that (talk page stalker) (talk page stalker) is well up on things wm: and (ro)Bots.

See Banning policy e.g. for how Community Bans work.

If your user name is still in red, then please read this. Also, see Wikipedia:Why create an account?.

To see a user's voting on RfAs: [1]. For this & other tools, see User:Vipinhari - thx.

This shows an editor's contribution count per month (incl. wp:ES-usage).

Here's a neater, more professional-looking User page than mine.

Here are ways of searching Wikipedia articles for set text.

Dubious links: do you want colours to highlight these for you? Then see here.

For quotes etc. on coloured background, see this.

To see what DAB work needs doing on a project, see this tool.

Here's a list of 'Alt+' codes for Windows keyboards.

Tools/Optimum tool set.

This neatly compares the hits on multiple WP articles.

Why we keep getting "Done, but with errors on page.".

HELPMEBOT explains IRC commands (e.g. !helpme).

Google can translate. Check if an IP is shared by performing a WHOIS and Reverse DNS lookup query on the IP.

The above is to determine if the IP belongs to a school or a proxy server.

Manual of Style: (dates and numbers) Year-numbering systems.

Wikiquette alerts e.g. to discuss editors' perceived faults (maybe prior to arbitration).

Also see Editor assistance and Deny recognition.

Today's patrol-count for a sister-project 'wikiHow'.

What do Wikipedians look like? There are regular meetings in several continents.

One can search a user's Edit Summaries like that.

See how 2 users have interacted, using 'IntersectContribs' from tools.

External links to a given external URL can be made like this.

You can show a user's rights as in that blue example.

Use <categorytree> (or Special:CategoryTree) to show a category tree, e.g.

However, this alternative category tree method arguably gives more info. (C = no. of Categories, P = no. of Pages [articles]), albeit in a separate tab.

Using <nowiki> </nowiki> around text - e.g. <nowiki> {{Image requested}} </nowiki> - saves that text being interpreted by Wikipedia.

From any revision history page

On any page's revision history ( like https://en.wikipedia.org/w/index.php?title=Papers_(information_leaks)&action=history ), there is a line, near the top, like this: "External tools:

Find addition/removal (Alternate) Find edits by user (Alternate) Page statistics Pageviews Fix dead links".

If you click on Pageviews, you can get into https://xtools.wmflabs.org/ec/en.wikipedia.org/Trafford09 which is interesting.

(Many thanks to the stalwart User:Chzz for this subsection.)

All articles on Wikipedia should have in-line, numbered references after facts, showing the 'reliable source' (a newspaper, book, etc.) where the information can be checked, so that all information is verifiable.

Here's an example of how to add references:

That makes the references automatically display as small numbers^[1] which will link to the details in the section titled == References == at the end. You can see that example in action here.

This and this explain "Love United, Hate Glazer" LUHG.

For those with views on shooting & blood 'sport's: "No court proceedings for beating crows to death"

See this if you normally like cats, and this if you like polar bears.

Here's a Tony Hart memorial.

One can use < pre> and </ pre>, to preserve spaces, say in a table, like this example:

12086217	Fisher	Jason	UK	Bmhm	8k	1196	9	0
16486019	Eccles	Joe	UK	Bmhm	9k	1244	7	3678
18250023	Chen	Barton	UK	Bmhm	1d	2109	1	891
10874820	Cao	Xinjin	UK	Bmhm	4d	2394	1	0

The BBC says "Around half of Mumbai's population live in slums.".