iLife is a suite of software applications developed by Apple for organizing, editing, and publishing photos, movies, and music. The iLife '11 suite comprises five applications: iPhoto, iMovie, iDVD, GarageBand, and iWeb (part of MobileMe, so essentially defunct). iDVD was not updated – this is still the iLife '09 version. Requires an Intel Mac running Snow Leopard or later. iLife comes included on new computers and the invidivual app are available for purchase through the Mac App Store (which you will find in your Snow Leopard Applications folder).

iPhoto makes importing, organizing, editing and sharing your digital photos as much fun as taking them. Tutorial (from Apple).
iPhoto ’05 (93 Quicktime video tutorials from Atomic Learning)
iPhoto ’06 (25 Quicktime video tutorials from Atomic Learning)
iPhoto ’06 requires a G4 or newer. A G3 Mac can run iPhoto 5.
iPhoto ’08 – Discover some hidden features. Master your image library.
iPhoto ’09 – Find many video tutorials from Apple.
iPhoto ’11 – Apple's video showcase (6 video tutorials)
iPhoto ’11 – Apple's What's New page goes through the new features and includes many video tutorials
iPhoto ’11 – Apple's What is iPhoto page contains lots of information and links to many how-to pages

iMovie is the fastest and easiest way to turn home movies into impressive productions. With iMovie, you simply arrange your video clips, still images, and music in the order that best tells your story.
iMovie '11 Apple's Overview
iMovie '11 Apple's series of tutorials
iMovie HD 6 – (59 Quicktime video tutorials from Atomic Learning)

GarageBand You don’t have to be a musician to make music with GarageBand. GarageBand includes short pieces of pre-recorded music called loops. You can combine, arrange, and extend loops to make your own song. I use GarageBand to convert cassette tapes to digital iTunes music, to make live recordings, and to make ringtones for my iPhone. GarageBand can record from a MacBook (or even an iBook) without a microphone.
GarageBand ’11 – Apple's What's New page goes through the new features and includes many video tutorials
GarageBand ’11 – Apple's What is GarageBand page contains lots of information and links to many how-to pages
GarageBand 2 (39 Quicktime video tutorials from Atomic Learning)
GarageBand 3 – What’s New (25 Quicktime video tutorials from Atomic Learning)

iTunes used to be part of iLife. Now it comes on all Apple computers and is also a free download.
Apple's What is iTunes page with many page links and lots of information.

iDVD With iDVD you can organize your movies, create photo slideshows, and build your own DVD menus—even add your Keynote presentations to a DVD.
Apple still has a fair amount of content at their support page. There are also 7 video turorials along with four text tutorials on iDVD: Find Out How
iDVD 6 (55 Quicktime video tutorials from Atomic Learning)