So I want to make a model for 3D-printing and searched for a guide on how to change the units to metric units first of course, but the guides I found were totally outdated, because there seems to have been massive changes to the UI. I don't even know where to start in the Manual and got kinda lost in the pages there without finding an answer.
What I want to do:
1) Change the "blender" units to metric units.
2) Display the volume of objects in Blender.
Thank you guys so much in advance for any help!