Book/Course recommendation: What books/courses would you recommend for a non-CS degree programmer

It is a fact that merely learning to program is not enough in modern software industry. I learnt writing code from MOOC courses and taught myself few web development library like node.js, express.js, etc.. As I implemented some basic web app I soon realized that my code was dirty, confusing and not maintainable at all! This is a problem that many self taught developers face. I’m looking for recommendation of books or online courses(more practical the better) to improve my code. I want to learn how to define features, structure complex software, make code modular, testable and maintainable. I want to be breaking a project into modules and work independently on each module. Also what learning path should be taken when learning to write clean code. Thanks for investing time in reading this.