HTML

• Semantics
• SEO
• Accessibility
• SVG
• Markdown
• Transpilers: Jade/Pug, HAML, Slim, EJS, Handlebars
• Static-Site Generators (Gatsby, Hugo, Jekyll)

CSS

• Box Model
• Display
• Floats
• Position
• Flexbox
• Responsive Web Design
• Pseudo-selectors
• Vendor Prefixing
• Transforms
• Filters
• Transitions
• Animations
• SVG Line Drawing
• Custom Fonts
• CSS Grid
• Frameworks and Libraries (Materialize, Boostrap, Foundation, PureCSS, Tachyons, Bulma, SemanticUI)
• Preprocessor (SASS/SCSS, Less, Stylus, PreCSS)
• Postprocessor (PostCSS)
• CSS Architecture (BEMCSS, OOCSS, SMACSS, SUITCSS, Atomic)

JavaScript

• Fundamentals (w/ ES2015)
• this
• Error Handling
• Callbacks
• AJAX (with XMLHttpRequest, then Fetch)
• DOM
• DOM Events and Delegation
• Promises
• Prototypical Inheritance
• Classes
• Behind the scenes...
  • ECMAScript and JavaScript
  • TC39 Process
  • History of JavaScript
• Strict Mode
• Higher Order Functions
• Closure
• Recursion and Stack
• Connections (WebSockets, WebRTC)
• Currying and Partials
• async/await
• Web Workers
• Progressive Web Applications
  • Service Workers
  • Manifest.json
• Map, Set, WeakMap, WeakSet
• Web Assembly

JavaScript Ecosystem

• Package Manager (NPM, Yarn)
• Module Bundler (Webpack, Parcel, RollUp)
• Source Maps
• Linters (ESLint, JSLint, ESHint, JSCS)
• Transpilers (Babel)
• Static Type Checkers (TypeScript, Flow)
• JavaScript Generators (ReasonML, Elm, ClojureScript, PureScript, Fable)
• JavaScript Testing (Jest, Enzyme, Cypress, Jasmine, Ava, Mocha, Chai, Sinon, Karma, Storybook)

JavaScript Frameworks

• Single Page Applications (React, Vue, Angular, Ember, Preact, Polymer, Backbone)
• Routing (React-Router, Reach Router)
• Server-Side Rendering (Next.js, Nuxt.js, After.js)
• State Management (Redux, Mobx, VueX, Flux, Apollo, unstated)
• CSS-in-JS (Emotion, Styled-Components, Glamorous)

JavaScript Libraries

• DOM
  • jQuery
• Utilities
  • Lodash, Momentjs, RXjs, Ramda, Underscore, Faker.js
• Animation
  • Complex Animations: TweenMax, VelocityJS, PopMotion, Tween.js, mojs
  • Interactivity: ScrollReveal, Parallax.js, Stellar.js, Skrollr, ScrollMagic.js
• Data Visualisation
  • D3.js, Chart.js
• SVG
  • Snap.svg, Raphael, Vivus
• 2D
  • Canvas
  • P5.js, Paper.js, Two.js etc.
• 3D
  • WebGL
  • Libraries: Three.js, REGL
  • Shaders: GLSL
• Games
  • 2D: Phaser, PixiJS
  • 3D: Babylon, Whitestorm
• Web Audio
  • Howler.js, Tone.js
• AI
  • TensorFlow.js, Brain.js

JavaScript APIs

• Web Components
• Web VR
• Storage
  • LocalStorage, SessionStorage, WebSQL, IndexedDB
• Device
  • Battery, Geolocation, Device Orientation, Push API, VibrationAPI
• Audio
  • WebAudio, SpeechSynthesis, SpeechRecognition
• Other
  • Web Share API, Payment API

JavaScript: Other Applications

• Mobile Applications (React Native, Ionic, Cordova, PhoneGap, NativeScript)
• Desktop Applications (Electron, Carlo, NW.js, Proton Native)

Back End

• Ruby on Rails
  • Routing
  • Controllers
  • Active Record
  • Models
  • Views
  • ERB
  • Form Helpers
  • Asset Pipeline
  • Helpers
  • Action Mailer
  • Active Job
  • Action Cable
  • Active Storage
• Node.js
  • Web Server (Express, Koa, Meteor, Sails, Hapi, Loopback)
  • Database (Sequelize, pg-promise, pg)
• Background Workers
• Authentication
  • Basic Authentication
  • Token Authentication
  • OAuth
  • JWT
  • OpenID

Other Programming Languages

• Golang
• Elixir
• Rust
• Python
• Java
• Scala
• Clojure
• .NET
• PHP
• C#
• F#
• Swift

Database

• Relational Databases (PostgreSQL, MySQL, MariaDB, SQLite, Oracle, InnoDB)
• Non-relational Databases (MongoDB, CouchDB, Cassandra, Couchbase, RethinkDB, DynamoDB )
• Hosted (Firebase, Firestore)
• GraphQL
• Caching (Redis, MemCached)
• Searching (ElasticSearch, Solr, Sphinx)
• ORM (ActiveRecord, Sequelize)

Ecosystem

• Terminal
• Git
• GitHub
• HTTP
• HTTPS
• TCP/IP
• WebSockets
• WebRTC
• Hosting
• REST
• SOAP
• Continuous Integration (TravisCI, CircleCI, Jenkins)
• Web Servers (Apache, Nginx, Caddy, MS IIS)
• Containers (Docker, Kubernetes)
• Testing
• Security
• DevOps
• Maths

Testing

• Ruby on Rails
  • Unit/Integration Testing (RSpec)
  • End-to-end Testing (Cucumber, Selenium)
• Node
  • Unit Testing (Jest, Mocha, Jasmine, Enzyme, Ava)
  • Integration Testing (Karma)
  • End-to-end Testing (Puppeteer, Selenium, Cypress, Cucumber.js, NightWatch)

Computer Science

• Programming
• Computer Architecture
• Data Structures
• Algorithms
• Math for CS
• Operating Systems
• Computer Networking
• Databases
• Languages and Compilers
• Distributed Systems

Outside Dev

• Product Development and Management
• Graphic Design
• User Experience Design
• User Interface Design
• Writing
• Marketing
• Data Science
• Data Analytics