Python language is a high-level programming language with dynamic semantics and object-oriented programming that developed to be easy to understand and implement. It is a scripting language like Perl and ruby and more suitable for creating web applications too. Java-Script is an object-oriented programming language that can be used to create dynamic web applications and got standardized in ECMAScript language specification. Java-Script supports various programming paradigm as object-oriented, functional, and imperative programming. I suggest to start with Python, check out this Python course by Intellipaat to learn Python.
You can watch this video on Python vs JavaScript to understand more: