I tried to open an .obj file using import but all I got was the workstation with the block. Yes, I'm a total beginner.
.blend files can be opened by Blender. Other file formats can be only imported.
Go to File ‣ Import ‣ Wavefront (.obj) and choose the file.
Remember to save the Blender file as a .blend file. If you wish to export the obj file go to the menu item File ‣ Export ‣ Wavefront (.obj).