If you are upgrading from one major version to another, be sure to checkout our Upgrade Guide for information relating to backwards compatibility breaks.
Ensure NPM is the latest version
npm install -g npm
npm install -g firstname.lastname@example.org
If you're upgrading, run this inside your project directory to ensure you get the latest plugin versions
rm -Rf node_modules; npm install
If you want operating system notifications, follow these additional instructions - ignore the install npm instructions as we already completed them earlier
If you get any errors, try running docpad anyway (most installation errors are non fatal and just for debugging purposes) - if you do get a fatal error then refer to our Troubleshooting Guide as it is probably easily fixed. :).