title: Error when installing Tensorflow - Python 3.8
body: <p>I'm new to programming and following a course where I must install Tensorflow. The issue is that I'm using Python 3.8 which I understand isn't supported by Tensorflow.</p>
  
  <p>I've downloaded Python 3.6 but I don't know how to switch this as my default version of python.</p>
  
  <p>Would it be best to set up a venv using python 3.6 for my program and install Tensorflow in this venv?</p>
  
  <p>Also, I using Windows and Powershell.</p>