Unfortunately, I couldn't find a single, exclusive PDF guide that covers all aspects of "The Children of Hurin". However, I can provide you with some resources:
The Children of Húrin is arguably J.R.R. Tolkien’s most powerful writing, preserved and presented by his son jrr tolkien the children of hurin pdf exclusive
A pirated PDF might render this as:
Compiled by Christopher Tolkien from his father’s drafts, this standalone novel strips away the Hobbit-ish comfort and plunges the reader into the First Age, a time when the Dark Lord Morgoth’s shadow was literal and suffocating. Unfortunately, I couldn't find a single, exclusive PDF