Intermediate React, v6: React Server Components, Hooks & Performance vs Modern React with Redux

v6 is rebuilt around React 19 — render modes, React Server Components both from scratch and inside Next.js, transitions, optimistic and deferred values. Reviewers praise the "under the hood" RSC explanation. The honest caveat is that hooks, TypeScript and Redux content from older versions has been narrowed in favour of the RSC and performance focus.

Brian Holt is the single most consistently praised element across nine years of Hacker News mentions and official testimonials. Learners with one to three years of React experience still call the teaching "fun", "interactive" and clear. Official course rating sits at 4.7 stars.

Requires a Frontend Masters subscription ($39/month or $390/year). At a 6h22m runtime this single course is only worth the price if you pair it with the wider catalog or complete it inside one billing month. Less competitive against the free React docs if you want one course alone.

Unlike the project-based Complete Intro, the Intermediate course is modular — unrelated concepts taught as standalone lessons (RSCs from scratch, RSCs with Next.js, performance demos). Reviewers find the build-from-scratch RSC segment genuinely illuminating, but there is no single cohesive app to carry away as a portfolio artefact.

The RSC and performance material maps directly onto what teams are shipping with Next.js App Router in 2026. Learners specifically credit it with demystifying what Next.js is doing under the hood — transferable knowledge rather than tutorial-only skills.

The standout is Grider's diagram-driven explanation. Reviewers repeatedly praise how he explains everything "bit by bit" with custom mockups and visuals, and deliberately walks through common mistakes before the preferred fix. The catch: at 75+ hours some sections cover older class-component and legacy Redux material learners no longer need.

Grider is one of the most consistently praised instructors on Udemy. Across blogs and Hacker News, developers call his courses "outstanding" and say his style is exceptionally clear. The 4.7 Udemy rating across ~89,000 ratings reflects this. The only recurring note is that his slow, thorough pace does not suit everyone.

On Udemy's frequent sales (~$15), 75+ hours of well-structured, frequently updated content is a strong deal, and reviewers say it is "worth every penny." It still loses a little because part of that runtime is legacy material, so the effective value is high but not every hour is essential.

The course is hands-on and project-based, which most learners value. But the most common criticism is that it lacks real challenges — the projects are largely follow-along, with no exercises where the student must implement features alone. Some also flag unexplained Bootstrap styling that complicated their own later builds.

It covers modern, employable React — hooks, Context, React Router, TypeScript, and Redux Toolkit in recent updates — and developers report it genuinely prepared them. The honest gap is depth on testing and the lingering legacy Redux sections, which can leave beginners unsure which patterns are current.