I have used AutoCAD for years. Mostly LT versions, the no bells and whistle versions.
You can copy, paste a photo on a AutoCAD drawing. Open AutoCAD and create a drawing. I use master drawings that have most of the setups I like. Then just rename the master drawing to what ever I want and save it in the chosen file. Close out the master and open the new created drawing. With the new drawing open paste the pic on it. BUT the pic needs to be saved in your computer somewhere. Don't just click it off the web and paste it on the drawing, it will not stay. AutoCAD uses the pics location in your computer. So save the pic somewhere on your computer. For me I like to create a file with the name of what I am drawing and download all the pics to this file. When you save the new AutoCAD drawing and come back to it later the pic will reappear. Next set the pic to be drawn over, lock to be in back. Normally pics stay in the front and any lines drawn over will quickly disappear behind (back) the pic. You can scale a pic to the actual size or scale size. I like actual size best. Then use the scale feature to print out in scale.
Sometimes the attached pic will distort. This happens to me and I just delete that pic. Just keep trying to attach the pic and it will work. Might take two or three attempts. But scaling will be needed to get the pic in the right size for drawing.
PDF files can be nice. There are two types of PDF files; one that when scaled will still have sharp lines and the other when scale the lines get larger and fuzzy. It has to do with the setting of when the PDF file was created.
A nice feature is you can attach a pic of sub plans, scale them and print them out. This can let you get a quick set of plans for modeling. But then again expect some slight out of scale features.