1. http://help.adobe.com/en_US/Reader/8.0/help.html?content=WS58a04a822e3e50102bd615109794195ff-7e7f.html
2. http://www.foxitsoftware.com/pdf/reader/addons.htm noted the "comments tools."
So, starting a PhD program, and most of the readings are articles provided elctronically in pdf format. They are protected.
Rather than printing and marking up, I'd like to be able to read and make notes on my laptop. The reading is no problem, but I was wondering if anyone had a suggestion on how I could mark-up the file without too much work (making a bunch of jpegs of screens for each file, for example, would be a lot of work) or too much expense?

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