My Favorites:

Influential people:

Dana K. White (A Slob Comes Clean blog and YouTube)

Cassandra Aarssen (Clutterbug)

Dawn Madsen (The Minimal Mom YouTube)

April Tandy (SpaceMaker on YouTube)

Joshua Becker (Becoming Minimalist blog)

K.C. Davis

Peter Walsh

Books:

Decluttering at the Speed of Life (Dana K. White)

How to Manage Your Home Without Losing Your Mind (Dana K. White)

The Magic Art of Space Making (April Tandy)

Keep the Memories, Lose the Stuff (Matt Paxton)

How to Keep House While Drowning (K.C. Davis)

Goodbye, Things (Fumio Sasaki)

The Mindful Art of Swedish Death Cleaning (Linnea M. Bergman)