Choose a language and learn its concepts thoroughly.
For example, suppose you chose Java, then you should have command over its concepts and you should know the internals of it as well. — 📖 Have a good understanding of Data Structures and Algorithms.
Without having good command over DS/Algo, we won’t be able to move a bit in the world of software development. 📖 Learn a framework that supports that language.
For example, learn Springboot if you chose Java as a language, python Django…