Where to get Textures online:

Mayangs Free Textures

1123 Free Textures are available from The Creative Pro site. It has a lot of interesting info, tutorials and freebies for image makers.

Shadow House Creations has some great textures and so does Slum Textures

Handwriting Texture Brushes

Here's a list from Diana Day at Photoshop Elements User:

Links to further online tips and tutorials on textures

More marvelous textures from Jasmin Junger, can be found in her gallery. You can also find two of Jasmin’s tip pages, here:

Manip T+T: Creating Textures

— Jasmin Junger

Manip Tips + Tricks – Textures

— Jasmin Junger

Textures for Layers

NinianLif’s Texture Addicts

Texture

Abducted by Design’s Great Wood Textures

200+ Textures, Brushes, and Fonts: Ultimate Grunge Roundup (Design River)

Textures by Ghostbones (Flickr)

Free Grunge Textures (Texturez.com)

Urban Dirty’s Free Stock Textures

24 Free High-Res Textures (bittbox.com)

cgtextures.com

300+ Free Hi-Res grunge textures you’ve never seen before! (Design Shard)

NinianLif’s textures (Flickr)

Grunge Textures’ Texture Gallery

highresolutiontextures.com

luGhertexture.com

Mayang’s Free Textures

Free Textures (pepfx.net)

TextureKing

Texture Warehouse

99 Free Canvas, Paper, Paint, and Metal Textures (tutorial9.net)

There are many, many more free textures on deviantArt; enter ‘texture’ into the search box to find them.

Flickr Texture Groups

The Flickr Web site includes several groups devoted to using texture on photos, where you’ll find terrific examples, as well as some free texture downloads. Here are just a few:

Textures for Layers

NinianLif’s Texture Addicts

Texture

For more on textures in Flickr, simply type texture into the Flickr search box.