Complete Intro to React, v9 vs Fullstack Svelte with SvelteKit

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(no Create React App), the focus on current patterns that actually work in production codebases, and the absence of outdated class-component material.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 The course avoids outdated approaches that would confuse learners encountering a modern codebase, which sets it apart from older React curricula still teaching class components as the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.

Nearly 5 hours of content (4h 52m) split across four structured sections: Introduction, SvelteKit Basics (routing, data loading, forms, API routes, stores, error handling), Advanced SvelteKit (hooks, link options, advanced routing and loading patterns), and a complete SvelteFlix project build (carousels, search, infinite scrolling, caching). The curriculum aligns with the current SvelteKit production stack and avoids legacy patterns. Published June 13, 2023 and compatible with Svelte 3 and 4. One gap noted by reviewers: Svelte 5 runes syntax is not covered, since the course predates Svelte 5's stable release.

Rich Harris is the creator of both Svelte and Rollup, and a software engineer at Vercel. Teaching the framework you invented gives unparalleled depth: Harris explains architectural decisions and trade-offs, not just API syntax. The Frontend Masters platform awarded the course a 4.8/5 rating based on student reviews. Independent reviewers consistently note that learning directly from the framework's author accelerates understanding of the "why" behind SvelteKit's design choices — something no third-party instructor can replicate. Minor critique: Harris assumes a reasonable level of JavaScript comfort and does not slow down for absolute beginners.

Access requires a Frontend Masters subscription (~$39/month or ~$390/year) rather than a one-time purchase. Strong value if you use the subscription for multiple courses — Frontend Masters covers the full frontend stack (JavaScript, TypeScript, React, CSS, Node.js, and dozens of other tracks) and has a companion Svelte Fundamentals course by the same instructor. Weak value for learners who want only this one course. No free tier beyond a short preview. The subscription cost is the dominant complaint across otherwise positive reviews.

Frontend Masters provides written transcripts for every lesson, a downloadable course notes PDF, and public GitHub repositories for the SvelteFlix project used in the course. Community support runs through the Frontend Masters Discord. There is no dedicated course forum or live Q&A with Harris himself post-recording. Reviewers who took the course report that the SvelteKit official documentation and Discord are the primary support channels for issues beyond the course material — typical for Frontend Masters workshop courses where the instructor is not actively engaged post-recording.

The course covers file-system routing, server-side data loading, form actions with progressive enhancement, API route creation (GET/POST/PUT/DELETE), SvelteKit stores, server hooks, caching strategies, and environment variables — all features used in production SvelteKit applications. The SvelteFlix capstone integrates a real third-party API (The Movie Database) and demonstrates infinite scrolling and client-side caching patterns. The main real-world gap is authentication: no auth implementation is covered, which is a common production requirement. Svelte 5 runes are also not included, but Svelte 4 apps are still widely deployed.