There is already a official document to guide you how to install Python on Microsoft Windows through an installer, you might prefer this way.

## Python 3

### Install

Install Python to C:\Python37.

So the path is supposed to:

C:\Python37

Add this directory C:\Python37 to the Windows environment path.

## Pip

You can ignore this section if your Python version is the lastest.

Pip is automatically installed since Python 2.7.9 and Python 3.4. If you use older version, you might install Pip by using get-pip.py

The following steps are for installing Pip, the package manager of Python.

https://bootstrap.pypa.io/get-pip.py

### Install Pip

python get-pip.py

Pip will be installed to Scripts directory as the screenshot below.

Add this directory C:\Python37\Scripts to the Windows environment path.

## Environment Variables

The Python and Pip directoies should be listed in PATH just look like the below.

### PATH

setx /M PATH "%PATH%;C:\Python37;C:\Python37\Scripts"

### PYTHONPATH

setx /M PYTHONPATH "C:\Python37;C:\Python37\DLLs;C:\Python37\lib;C:\Python37\lib\plat-win;C:\Python37\lib\site-packages"

Done.

Now, you can start your first Python script. Happy learning!