I have been working through Tavmjong Bah's Guide to Vector Drawing tutorials and topics. This has been a great help to someone just starting out. The discussion on setting up a workspace of say 600 X 600 px is good for my initial drawings, but would like to set up the workspace to a size of 6 inches by 6 inches and then print in full size. I would also like to take that same drawing and rescale to an 8 x 8 inch drawing/printout. Am I better off drawing in pixels and printing in inches, but how to accomplish that. One more thing, the rulers on the edges are px as well as the grids. Can they be rescaled to inches or portions thereof - such as 1/4, 1/8, 1/16"?
Thanks you so much, GregoryV

For printing the design in most cases the save as pdf is the best output.
The printer uses the dimensions your image was saved.
Personally I'm not sure how pixel dimensions would turn out as they are much based on resolution settings, so
I would suggest to work with inches/mm-s for printing material, and scale everything to the printable size.

You can set the basic unit in the document's properties panel (Shift+Ctrl+D), as well as grids of any kind that may add to the ruler's function.

Thank you both, Lazur and Pilosopong for the feedback. Is there a difference in printing an svg file versus saving that file as a pdf? Do they turn out different?
Thanks again, GregoryV

I have no experience with that.
I know you have several setting options for printing from pdf, which may not be entirelly in inkscape's print option, but I'm not sure about that.
Another thing that might cause some trouble in some cases is the heavy use of raster-based filters, like blurring.
When you save as pdf, those filters will be represented with a raster copy, at a resolution you can set -hopefully-.
When you print from svg, such filters are rendered real time, yet it's safer to have a raster copy in my opinion.

That is the main difference: pdf-s are rendered almost everywhere the same, while svg-s can look different opened with different programs.
With no filters used, both could be good.
If there are many of them, you may try both and you will see the differences if there are any.

Thank you so much for the reply. The only thing I will be doing is making a basic drawing in black and white, approx 6"x 6". This will then be saved to a thumb drive to be printed at KINKOS, at the same size 6x6. Sounds like I can just stay in SVG format thru out the process.

Thanks, will do...