Introductory
Getting started with the web - Learn web development | MDN
HTML
Semantics - MDN Web Docs Glossary: Definitions of Web-related terms | MDN
HTML: HyperText Markup Language | MDN
HTML: A good basis for accessibility - Learn web development | MDN
CSS
CSS: Cascading Style Sheets | MDN
JavaScript
Metadata / microformats
Markdown
Markdown Tutorial - Introduction
Web (multiple topics)
MDN: Mozilla Developer Network
W3Schools (not affiliated with W3C)
Recommended Reading Reference - tips & tricks - HUGO
Site building
Dynamic CMS
CMS speed dating: which platform should you use? | CIRA
Static site generators
Hugo info
Really getting started with Hugo: four simple steps | BryceWray.com
Text editors
Recommended Reading Reference - tips & tricks - HUGO
Hugo Tutorials & Tips - tips & tricks - HUGO