Wikipedia is a vast maze of help-pages etc. This is my index and quick-link to those I have found useful.
Alt-Key Codes :→ http://www.alt-codes.net/
Harvard Citation:→ Template:Harvard_citation_documentation
HTML in Wiki:→ Help:HTML_in_wikitext
HTML Overall:→ http://en.wikipedia.org/wiki/HTML_element#General_phrase_elements
Layout:→ WP:LAY = http://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/Layout
Links :→ http://en.wikipedia.org/wiki/Help:Link and http://meta.wikimedia.org/wiki/Help:Links
Magic Words :→ Help:Magic Words = https://en.wikipedia.org/wiki/Help:Magic_words(parser functions, variables and behavior switches)
Parameters:→ http://meta.wikimedia.org/wiki/Help:Parameter_default
Spaces :→ http://en.wikipedia.org/wiki/Space_(punctuation)
Span & div :→ http://en.wikipedia.org/wiki/Span_and_div lists a lot of HTML helps
String handling templates :→ http://en.wikipedia.org/wiki/Template:String_templates_see_also_text
Tables:→ Help:Table = http://en.wikipedia.org/wiki/Help:Table
Templates(Creating etc.):→ [1]
Templates(Help):→ http://en.wikipedia.org/wiki/Wikipedia:TEMPLATE
Templates(Help Advanced):→ http://meta.wikimedia.org/wiki/Help:Advanced_templates
Templates(Links to details):→ http://en.wikipedia.org/wiki/Wikipedia:Template_messages
Unicode Chars:→ http://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references
Wiki Markup:→ http://en.wikipedia.org/wiki/Help:Wiki_markup
Cut and Pastes edit
Cross, F.L.; Livingstone, E.A., eds. (1974). ".". The Oxford Dictionary of the Christian Church (2 ed.). Oxford: Oxford University Press.
