Here are links to a collection of useful templates that I have discovered/used:

• ((Cleanup)) - For general clean-up/problems
• ((Cleanup-link rot)) - Bare URL/Link rot warning template
• ((Construction)) - For pages ungoing construction
• ((Wikify)) - For articles that need appropriate formatting or linking/wikifying
• ((Internallinks)) - A variant of wikify for pages that are properly formatted, but need linking to other related topics.
• ((Unreferenced)) - for articles that conspicuously lack references
• ((Refimprove)) - for articles that need more references

• ((vC)) - Verify credibility of source, places a ^{[reliable source?]} tag in text
• ((cn)) - Citation needs for source, places a ^{[citation needed]} tag in text
• ((who)) - Attribution tag for content, places a ^[who?] tag in text
• ((whom)) - Attribution tag for content, places a ^{[by whom?]} tag in text

•  Done - it is self-explanatory

Wikipedia:Template_messages/Disputes - This a great resource.