Complete Intro to React, v9 vs Learn Python 3

The course covers React 19 from initial project scaffolding with Vite through hooks (useState, useEffect, useContext, useReducer), component composition, routing with TanStack Router, and performance patterns — all organized around building a production- style e-commerce application rather than isolated toy examples. Reviewers consistently praise the modern toolchain (no Create React App), the focus on current patterns that actually work in production codebases, and the absence of outdated class-component material. The v9 designation signals genuine curriculum updates rather than cosmetic refreshes, which is rare among multi-version React courses.

Brian Holt is described across all reviewed sources as an exceptional teacher — specifically praised for making complex concepts feel obvious through clear analogies, methodical build-up, and a conversational delivery that stays engaging across eight hours of video. Multiple reviewers note that experienced React developers still learn meaningful things from Holt's explanations, suggesting depth beyond what the beginner framing implies. He is repeatedly described as a GEM among Frontend Masters instructors.

The course requires a Frontend Masters subscription ($39/month or $390/year), which gives access to the full course catalogue of 200+ expert-level courses — not a single-course purchase. For developers who intend to use more than a few courses, the subscription offers strong value. For learners who only want this one course, the subscription model is a higher upfront cost than a typical Udemy purchase. Frontend Masters does not offer a permanent free tier, though the course notes and exercises are publicly accessible at react-v9.holt.courses.

The e-commerce project format means learners build a real application rather than disconnected code snippets, and the toolchain — Vite, ESLint, Prettier, TanStack — mirrors what professional React teams actually use. Reviewers who moved directly from the course to their first React role or freelance project report that the patterns transferred immediately. The course avoids outdated approaches that would confuse learners encountering a modern codebase, which sets it apart from older React curricula still teaching class components as the primary pattern.

Building a complete e-commerce application — covering product listings, a shopping cart, routing, and state management — gives learners a deployable project and a portfolio piece, not just completed exercises. Reviewers highlight that the project scope is substantial enough to demonstrate real React understanding without being overwhelming. The course's companion notes at react-v9.holt.courses also let learners self-pace the text-based curriculum independently of the video playback speed.

Fourteen lessons covering Hello World, control flow, lists, loops, functions, strings, dictionaries, classes, and file I/O give beginners a comprehensive syntax foundation. The 2021 revamp added Portfolio Projects and reorganised content to mirror a traditional CS curriculum. Reviewers consistently call the material well-sequenced and "comparable to what you'll find in the official documentation or a popular book," though the interactive editor's strict output matching — treating "Hello, world!" and "Hello world!" as different — frustrates learners and doesn't reflect real-world feedback.

There is no single instructor; the curriculum-by-committee model delivers clear written lessons with instant in-browser feedback. The three-panel layout (instructions, editor, output) is praised for keeping learners active rather than passive. The downside is the absence of any spoken explanation of the "why" — several reviewers note they absorbed mechanics without internalising purpose, and the Get-Unstuck video walkthroughs can short-circuit the struggle that builds real retention.

The course requires a Pro subscription (around $34.99/month or roughly $144–$240/year), though a free trial is available. Given that 3.3 million learners have enrolled and it remains Codecademy's most-started course, many find the price reasonable for structured interactive learning. The certificate, practice projects, quizzes, and code challenges are all Pro-gated, which reviewers with beginner budgets find frustrating. A small number note that free Python resources on YouTube or in the official docs cover the same syntax at zero cost.

The course teaches Python in a sandboxed browser environment that cannot accept user input during execution — a fundamental gap from real Python programs. Reviewers describe finishing the course feeling confident but then "losing their footing" when attempting an unguided project, because the sample-code scaffolding and video walkthroughs remove the discomfort that real problem-solving requires. The over-optimised blog reviewer put it precisely: the interactive editor "simplifies/automates aspects that differ from real-world programming environments." Web-development-specific Python (Flask, Django, APIs) is entirely absent from this course and requires separate study.

Codecademy's forums, Discord server organised by topic, in-lesson hint system, cheat sheets, and AI assistant are collectively well-regarded. The Codecademy forum thread where learners reported being 50% through and still confused attracted dozens of supportive peer responses, suggesting an active community. SwitchUp reviewers flag that forum support from staff can be inconsistent, and the overall SwitchUp platform rating sits at 3.15/5, partly dragged by billing and cancellation complaints rather than content support.