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References

Fast lookup guides for every major TylerCode track.

📄

HTML

Structure pages with semantic markup, forms, tables, media, SEO, and accessibility.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
<main>
  <h1>Welcome</h1>
  <p>This page uses semantic HTML.</p>
</main>
🎨

CSS

Style professional interfaces with layouts, responsive design, animation, and design systems.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
.card {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

JavaScript

Build interactive websites with the DOM, events, async code, APIs, and modern patterns.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
const button = document.querySelector("button");
button.addEventListener("click", () => alert("Hello"));
🐍

Python

Learn Python fundamentals, scripts, automation, APIs, data work, and backend foundations.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
items = ["learn", "build", "ship"]
for item in items:
    print(item.title())
💻

PHP

Build server-rendered apps, forms, sessions, auth, JSON APIs, and secure backend workflows.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
<?php
$name = htmlspecialchars($_POST["name"] ?? "Guest");
echo "Hello, $name";
?>
📊

SQL

Query, model, and optimize relational databases with practical app-focused examples.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
SELECT users.name, orders.total
FROM users
JOIN orders ON orders.user_id = users.id;

React

Create component-based frontends with state, props, hooks, routing, and app structure.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
function Card({ title }) {
  return <article className="card">{title}</article>;
}
🟢

Node.js

Build JavaScript backends, REST APIs, auth middleware, jobs, and integrations.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
app.get("/api/status", (req, res) => {
  res.json({ ok: true });
});
🛠

Git & GitHub

Use version control, branching, pull requests, releases, and team workflows.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
git checkout -b feature/course-page
git add .
git commit -m "Add course page"
🛡

Web Security

Protect apps with secure auth, validation, headers, sessions, permissions, and threat modeling.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
Set-Cookie: session=...; HttpOnly; Secure; SameSite=Lax

Accessibility

Build inclusive products with semantic HTML, keyboard flows, ARIA, contrast, and testing.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
<button aria-expanded="false" aria-controls="menu">Menu</button>
📈

Data & Analytics

Turn data into useful decisions with CSVs, charts, dashboards, and Python analysis.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
const rows = csv.split("\n").map(row => row.split(","));
🧠

AI Development

Use AI APIs, prompt design, embeddings, retrieval, evaluation, and AI product patterns.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
messages = [{"role":"user","content":"Summarize this lesson"}]

Cloud & DevOps

Deploy reliable apps with Linux, Nginx, Docker concepts, CI, backups, and monitoring.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
server {
  server_name code.example.com;
  root /var/www/code;
}
📱

Mobile Web

Create installable, fast mobile-first experiences with PWA, offline UX, and touch design.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
}
💼

Developer Career

Build portfolios, technical resumes, interview habits, freelancing systems, and project proof.

Common uses

  • Build a small demo
  • Read existing code
  • Debug one error
  • Document the pattern

Things to remember

  • Prefer clarity over cleverness
  • Validate inputs and assumptions
  • Test the happy path and failure path
  • Keep examples small enough to understand
Project case study: Problem, constraints, choices, result, proof.