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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
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bulletproof-react
🛡️ ⚛️ A simple, scalable, and powerful architecture for building production ready React applications.
Or, if you insist on paying money, I really enjoyed ChrisonCode's 20 React apps https://github.com/chris-sev/make-react-apps . I suggest doing at least some of the projects on your own (there's a starter kit, you don't have to write the CSS/html, you can just focus on the React parts), and only look at the videos if you're stuck.
Highly recommend Joy of React by Josh Comeau. It's super well written with practical examples, code sandboxes, and Josh's sense of humor sprinkled in. I recommend starting with Joy of React and checking out the official React docs if you need more details about something.
My thoughts on learning how to code checkout this guide: https://github.com/alan2207/bulletproof-react This will show a good pattern for setting up a production ready react application (you can ignore the typescript if you want, but it's not that hard and totally worth learning).