For manuals to accompany Photoshop Elements or Lightroom, we really like Scott Kelby's books
Photoshop Elements 8 Book for Digital Photographers
The Adobe Photoshop Lightroom 2 Book for Digital Photographers
Some inspirational books:
Working The Light: Landscape Photography Masterclass
Photography Essentials Waiting for the Light (Photography Essentials)
Landscape Photographer of the Year Collection 3 (Photography)
Landscape Photographer of the Year: Collection 2 (Photography)
Fine Art Photography, Water, Ice and Fog: Photographic Techniques and the Art of Interpretation
Developing Vision and Style: A Masterclass in Landscape Photography