Read books 1-5, Mechanicum, A thousand sons, first heretic, deliverance lost, know no fear, fear to tread, Angel Exterminatus, Betrayer, Unremembered Empire, Scars, The Path of Heaven Pharos, Praetorian of Dorn, Master of Mankind, Shattered Legions, The Crimson King, Wolfsbane, Slaves to...