~ $ gatsby new gatsby-site https://github.com/WhiteRookPL/gatsby-event-page-starter

Download node in version v9.5.0, together with the newest possible npm. Then look here how to install yarn on your OS. After that install gatsby globally:

~ $ yarn global add gatsby-cli

~ $ gatsby develop
~ $ yarn run develop

First you will need to build the pages:

~ $ gatsby build
~ $ yarn run build

Then you can serve those locally:

~ $ gatsby serve
~ $ yarn run serve

Or deploy anywhere you would like to.