Now also mostly free from Sony and iTunes (both available to Canadians). 1st link for Sony, 2nd for the iBook version if it exists.
Complete Guide to Self-Publishing
Complete Handbook of Novel Writing,
iTunes
Getting the Words Right,
iTunes
Hooked,
iTunes
Story Structure Architect,
iTunes
How To Be A Writer (may also be on iTunes,
which is giving me a "store unavailable, connect later" message right now)