HTML5, CSS3, JavaScript, Databases, Git & GitHub, Node.js, React.js, D3.js:

https://www.freecodecamp.com/

JavaScript

Come sostiene Michael, qui puoi trovare: The World's Best JavaScript Courses & Tutorials in 2019

https://github.com/getify/You-Dont-Know-JS#titles

• Leggi online (gratis!): "Up & Going"
• Leggi online (gratis!): "Scope & Closures"
• Leggi online (gratis!): "this & Object Prototypes"
• Leggi online (gratis!): "Types & Grammar"
• Leggi online (gratis!): "Async & Performance"
• Leggi online (gratis!!): "ES6 & Beyond"

HTML

• https://developer.mozilla.org/en
• http://diveintohtml5.info HTML5

CSS

• http://meyerweb.com/eric/css
• http://css-tricks.com

jQuery

• https://jquery.com

Testing Tools

• Codecademy tool online per testare la sintassi ed imparare i codici
• Treehouse videocorsi