Video Tutorial 1 - How to add textures using the LSP Texture Applicator Actions.
(This example is with the Camden texture pack, but the same goes for all textures)
Video Tutorial 2 - Guest Video by Ana Brandt
Video Tutorial 3 - Artisan Textures on outdoor image
Video Tutorial 4 - Guest tutorial by Karen Wiltshire using the Artisan textures
Video Tutorial 5 - How to add textures by hand
Video Tutorial 6 - How to change the perspective of a texture in Photoshop