Start.dev Blog
Build logs, deep dives, and practical lessons on learning to code and shipping real software in the AI era from the Start.dev team and instructors.

Featured
Improve your developer resume, portfolio, cover letter, and application with practical advice that avoids common ATS myths and risky absolutes.

Ariel Weinberger · 6 min read

AI can speed up learning to code or quietly stop it. Learn how to use AI as a tutor, with example prompts and how Stuart on start.dev makes the help personal.

Ariel Weinberger · 7 min read

Boot.dev is a backend-focused learning platform. Start.dev teaches the whole stack, with challenges, AI at every step and a study advisor that knows where you're stuck.

Ariel Weinberger · 7 min read

Flexbox or CSS Grid? Learn the one-dimensional vs two-dimensional rule, see both build the same layout, and get a quick way to pick the right one.

Ariel Weinberger · 6 min read

What useEffect really does, when it runs, and how the dependency array and cleanup function work. Simple examples for fetching data, timers and page titles.

Ariel Weinberger · 5 min read

Learn how to center a div in CSS with Flexbox, Grid, margin auto, text-align, absolute positioning and Tailwind, and which method to pick for each situation.

Ariel Weinberger · 6 min read

Learn the JavaScript array methods you will use daily: map, filter, find, some, every, reduce and sort, with runnable examples on one shopping cart.

Ariel Weinberger · 5 min read

Learn what Express middleware is, how next() moves a request through the pipeline, and how to write a logger, an API-key gate and an error handler.

Ariel Weinberger · 4 min read

Build your first REST API with Node.js and Express in about 50 lines: routes, JSON, POST, PUT and DELETE, tested with curl, plus where to go next.

Ariel Weinberger · 5 min read

Learn how REST APIs work by following one request from client to server and back: URLs, methods, headers, status codes, JSON, and what REST actually means.

Ariel Weinberger · 7 min read

Python or JavaScript as your first language? See the same program written both ways, where each trips beginners up, and why JavaScript takes you furthest.

Ariel Weinberger · 9 min read

Learn the CSS box model with clear diagrams and code: content, padding, border, and margin, plus box-sizing, margin collapse, and DevTools tips.

Ariel Weinberger · 8 min read

Python lists, tuples and dictionaries compared with simple examples: how each one works, how they differ, and a quick rule for picking the right one.

Ariel Weinberger · 4 min read
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