Create Type Within A Shape In Photoshop

http://www.sitepoint.com/create-type-within-a-shape-in-photoshop/

text inside text

here

Using Text As A Container For More Text In Photoshop

picture in text

Place An Image In Text In Photoshop

Learn Photoshop With Text Effects

Layer Blending Modes in Photoshop and Elements
all you need to know.

seriously

http://www.northlite.net/ps/blend.htm

rest of sight looks pretty cool too

Photoshop Actions

http://www.smashingmagazine.com/2008/10/20/the-ultimate-collection-of-useful-photoshop-actions/

some decent apps