Install Node.js and NPM

Install Node.js as you would any other software. Do a general install to your computer.  
 
 Refer to: https://code.visualstudio.com/docs/nodejs/nodejs-tutorial 
 Install Node.js on your OS. https://nodejs.org/en/download/package-manager 
 
 Now you should be able to do the next steps here: Install HubSpot CLI into folder