To start Jupyter Notebook in Windows:
jupyter notebook
You can further navigate from the UI of Jupyter notebook after you launch it (if you are not directly launching the right file.)
OR you can directly drag and drop the file to the cmd, to open the file.
C:\Users\kushalatreya>jupyter notebook "C:\Users\kushalatreya\Downloads\Material\PythonCourseFolder\PythonCourse-DataTypes.ipynb"