What is OctoPrint used for?
OctoPrint is an open source 3D printer controller application, which provides a web interface for the connected printers. It displays printers' status and key parameters and allows user to schedule prints and remotely control the printer.
How do I access octopus?
Type in “http://octopi.local” (or the IP address assigned by your router to the Pi) on any browser. Make sure your computer is connected to the same network as the Pi. You should see the OctoPrint interface and a setup wizard pop up. Follow along, and be sure to set up a username and password for OctoPrint.