few people beginning greek learn accents;
fewer people still pay heed of them having learnt the principles;
fewer even still employ such principles when reading greek by orating the text aloud so as to exhibit the shifts in pitch.
if you want to appreciate the true poetic beauty of the Il, however, it is wise just to learn the basic directions in pitch with which the accents direct the words' flow. they were, of course, artificially created by Aristophanes of Byzantium to allow non-Greeks, such as ourselves, to apply the appropriate pitch variants.