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LeetCode
Discontinued This is my LeetCode solutions for all 2000+ problems, mainly written in C++ or Python. (by lyhsieh)
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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.
The Odin Project (a free and open-source full-stack curriculum)
It's enough to get the fundamentals down. From there you're going to want to make your own projects so you can stand out from the crowd, you'll also want to learn a few areas of computer science.. mainly data structures, algorithms, time complexity, etc. leetcode.com is a great website for that, it has a bunch of practice questions, and questions based on companies