Outlines only of vector shapes?

i have vectorized photo want print out b&w outlines of these shapes left, no colors. way explain it, want have boundaries between color shapes left in form of thin black lines. don't know illustrator , don't understand path is,  hope can understand reply.

select , apply strokes , fill "none"

 

http://tv.adobe.com/watch/learn-illustrator-cc/working-with-fill-and-stroke-attributes/

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