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.
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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
Learn SQL GROUP BY with one small table: count and total rows per group, group by two columns, filter groups with HAVING, and fix the classic GROUP BY error.
Ariel Weinberger · 6 min read
A beginner Next.js tutorial: build a small coffee menu with the App Router. Create a page, a layout, a dynamic route, and fetch data on the server.
Ariel Weinberger · 6 min read
TypeScript generics let one function work with many types without losing type safety. Learn the T, inference, constraints, and Partial with examples.
Ariel Weinberger · 6 min read
AI writes more code than ever. These are the developer skills that still matter: reading code, debugging, breaking problems down, and design judgment.
Ariel Weinberger · 7 min read
Learn addEventListener step by step: handle clicks, typing and form submits, use the event object, and avoid the mistakes that break listeners.
Ariel Weinberger · 6 min read
TypeScript is JavaScript with types. See what it catches, what it costs, and a step-by-step path from JavaScript to TypeScript.
Ariel Weinberger · 7 min read
Destructuring unpacks objects and arrays into variables in one line. Learn renaming, defaults, nested values, function arguments and the undefined error.
Ariel Weinberger · 5 min read
The DOM is the browser's live version of your HTML. Learn how JavaScript finds elements, changes text and classes, reacts to clicks and builds new ones.
Ariel Weinberger · 5 min read
Python f-strings put values straight into text. Learn decimals, thousands separators, percentages, column alignment and the {value=} debug trick.
Ariel Weinberger · 4 min read
How the HTML anchor tag works: full URLs, relative paths, jump links to a section, opening a new tab safely, and the small mistakes that break links.
Ariel Weinberger · 6 min read
Number(), parseInt() and parseFloat() each handle text differently. See which to use, what they do with tricky input, and how to check the result.
Ariel Weinberger · 6 min read
A Python lambda is a small function written as one expression. See the syntax, how it powers sorted(), max() and min(), and when def is clearer.
Ariel Weinberger · 5 min read
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