This is a contentious topic indeed! Still, there’s some advice to be had from the person behind one of the groundbreaking dictionaries. Check out this ed.ted flip.
On the ed.ted page please find the link to the dictionary that the speaker is behind. Be ready to tell me how it is different (for better or worse) from the ones you’re using (on-line or paper).
This video is not the easiest one to watch but do try to answer the questions in the Think section (don’t forget to save your answers).
Also have a look around ed.ted and find a video you would find beneficial for others. Use the comments to briefly recommend it (and share the link)