Everyone should have this gem bookmarked on their web browser. Go over to PrintWhatYouLike.com right now and try it out. You enter in a webpage and controls show up on the left side that help you select and then save or print only the content you choose.
In the past, I have somtimes been able to accomplish this by selecting items to print and then choosing “print selection”, but there have been many times that the content I want is not contiguous or I accidently make the wrong print selection and the whole page prints anyway. This site eliminates all those issues and lets you select exactly what you want to print.