During my developer journey, I found resources that are so valuable I really can't believe are free. Here are two of them... Tagged with refactoring, developer, programming, learn.

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Discover two valuable resources for developers: Refactoring Guru, a site that provides knowledge on refactoring and design patterns, and Exercism, a platform for learning programming languages through practice exercises.

2 Sites to Become a Better Developer

Refactoring Guru is awesome!
I recommend their books also, they are really easy to understand.

The first is just like a teaser of works (i.e. books, websites, lectures, etc.) started by Martin Fowler (<a href="https://martinfowler.com" target="_blank" rel="noopener nofollow">https://martinfowler.com</a>) 25 years ago (!) and by Robert (“Uncle Bob”) Martin more than ten years ago (<a href="https://cleancoders.com/" target="_blank" rel="noopener nofollow">https://cleancoders.com/</a>) respectfully. Please pay attention that the site is owned by an offshore company. It means the main purpose of its creators is to point you to the services of the company. No more! 
The second may be useful somehow, especially before a programming interview. Anyway, the number of exercises per language isn’t impressive: 146 for JS, 140 for Python, 165 for C#, which is the maximum, etc.

Don’t hesitate to support Exercism 🫡

Both are incredibly useful ressources !