AutoCAD

Plot Offset controls where the selected plot area sits on the printable page. It should be adjusted only after paper, area and scale are correct.

Physical output adds the operating-system driver, queue, loaded media and hardware printable area after the CAD setup. Test the device outside AutoCAD first.

AutoCAD still says Plot, but for normal CAD output print and plot are essentially the same process. The destination can be PDF, a desktop printer or a large-format plotter.

A sideways sheet is usually an output setting problem, not a reason to rotate the drawing. Set the paper first, then choose Portrait or Landscape.

One Layout should be simple: activate the correct sheet, confirm its named Page Setup, Preview, then output.

The Plot dialog looks crowded because it contains device, paper, area, scale, position and graphic settings in one place. You only need to learn them in a sensible order.

Plot Upside-Down rotates the output 180 degrees. It is different from Portrait versus Landscape and should not be confused with printer auto-rotation.

To print only part of a drawing, use Plot Area = Window and pick two corners. This is an area selection, not the same thing as selecting AutoCAD objects.

Model Space is where the full-size drawing normally lives. Paper Space Layouts are where repeatable sheets are normally assembled. Both can print, but the scale logic is different.