FlippedNormals - Retopology in Blender is now done! It will be released on Saturday - 4 Hours Long - Really getting into the 'Why' - Full head Retopo in real-time - Fundamental
Retopology in Blender, Part 2 - Outgang
Blender Retopology 101
How to Set Up Retopology in Blender
8 Blender Addons for Retopology - YouTube
Retopology in Blender (Beginner Tutorial) - YouTube