You can download and install Node.js from their official website.

npm i -g @engramhq/cli

You will be prompted for a username, email, and password. The username will be used as a prefix for your preview URLs.

eg signup

Once complete, a session is automatically stored on your system so you can use engram without having to log in again. If you need to login on a new machine you can use "eg login" to do so.