ok, the post modernistic view would be on the poem "Father and Child". Postmodernism is when something old is taken and made to fit into a new context (you might study this in Module A eg. Hamlet & Rosencrantz and Guildenstern are Dead, or Emma & Clueless). Harwood takes elements from King Lear by Shakespeare and uses them to fit the poem's context. It might be worthwhile finding out the basic storyline of King Lear, as this will help you understand the postmodernistic reading of F+C better.
* Harwood makes the persona in the poem like Cordelia, Lear's willful child. In KL, they have a disagreement but reconcile in the end. this is similar to the persona betraying her father's law and killing the owl in part 1 or F+C. From then until part 2, the persona grows up and then has a different view.
*The father is a postmodern version of King Lear. In part 2 there is a reference to "old king", alluding to the Lear/Father entendre.
*One line from Shakespeare's play is "be your tears wet?" This is used in part 2.
I wouldn't bother going too in depth with learning this type of reading, as it only really can apply to F+C. Just be aware of it in case it pops up in an exam q (doubt it will).
I hope this helps, it has been about 6 months since I looked at Harwood. This is totally open to critisism.