Ignore rare, difficult roots. But don't miss common and easy ones.
Here is just a demo to show how much you stand to gain if you pay a little attention.
bio, life
biology, exo-biology, biography,
bio-data, biodegradable.
graph, writing
graphic, phonograph(sound+ write), telegraph(distance + write),
monograph( one+ write), biography, autobiography,
photograph ( light+ write), cryptography (mysterious+ write) ,
lithography (stone+ write)
auto, self
autograph, autobiograph, autobiography, automobile,
autonomy, autocrat, automatic, automate,
autoimmune, automaton.