ABRIDGE

• Abbreviate

• Adapt for audio format, perhaps

• Condense

• Condense, as a book

• Curtail

• Cut

• Cut down

• Edit for Reader's Digest

• Edit substantially

• Edit, as for the Reader's Digest Condensed Books series

• Make a long story short

• Prepare for Reader's Digest inclusion

• Reduce in scope

• Reduce, as a text

• Shorten

• Shorten (a book)

• Shorten into one volume, maybe

• Shorten, as a reference

• Truncate