Sometimes even if I am interested in a topic and in need of sorting through it, I am still unable to get myself "into it" and engaged (especially for technical articles) unless it is printed out and I am writing notes, or questions or highlighting.
My question is, I don't want to have to print everything out and waste paper, when I'm not feeling 100%. Is there an alternative for online content to take notes? Or is there any technique that you use to keep focused?