As I have used PDFs before for both school and work related assignments, I found reading about it very helpful regarding the importance of settings and standards to use/consider when making/sending PDFs. The tip I particularly found useful was ensuring that image quality and file size of a PDF is compromised before posting or downloading online. This should be obvious to me as I have dealt with converting word documents over to PDF in the past where due to the size of the file (I was creating shapes on word not typing), the PDF took time to download and in some cases, didn’t download properly at all (i.e. my designs were distorted). The book I read says to break up files of these sort and hyperlink them together to guide a user in finding the files in order. This is definitely something that would be worth doing when dealing with PDFs that need to be broken up if the image quality is too much for the file size to handle.
Otherwise, the chart that the book provides, which show the various statistics and properties of PDFs under different settings, is a standout for knowing what PDF is the right PDF to use given the proper scenario and what program it is available to do it in. Knowing this important information including what I said previously, would positively affect my practice as a designer creating PDFs in that I would be able to maximize the quality of my work by using the proper guidelines.
This would spare me the mistakes of having a PDF that has bad image quality (can be hard to read/look at text or images) or even worse, having a PDF that cannot be downloaded if not put in the right setting (i.e. PDF/X, PDF/A) as each setting ensures that the file behaves as expected.