NetTuts.com has posted a great list of 30 tutorials they've written up for anyone wanting to work with the CodeIgniter framework in their applications. The list ranges from introductory "here's the framework" types out to detailed tutorials on building sample applications.

CodeIgniter is a fantastic framework, which caters to beginners, power users and everyone in between. As the best web development source on the web, we’ve taken it upon ourselves to provide extensive tutorials and screencasts on the subject. Today, we’ll take a look at over 30 of our most awesome CodeIgniter tutorials.

Tutorials in their list include:

• 6 CodeIgniter Hacks for the Masters
• Build an Rss 2.0 Feed with CodeIgniter
• Everything You Need to Get Started With CodeIgniter
• How to Update your Twitter Status with CodeIgniter
• From CodeIgniter to Ruby on Rails: A Conversion
• Their CodeIgniter From Scratch tutorial series (link is to last part of the series but contains links to all others)