Hi
i hv created a post for the ci(Codeigniter).
http://net.tutsplus.com/category/videos/

Here i just give a link where u will get
few (5 or more) video tutorials for ci.hope you will
enjoy the tutorials.

you may also download codeigniter.and there u will get a manual.

for learning CI you have to understand some basic things first..
) MVC format Model ,view,controller. here from the documentation
you just inform about the flow how mvc work.
basically controller control the flow of the application by integrating models and views.
controller--- is an class.
model---also '''''class.
view---the html pages.

)codeigniter settings
go to application/config folder
here you will get 3 file...autoload.php,config.php,database.php
you have to set this 3 php files as you need.
config----u can set the base url.i.e. localhost/application folder/
autoload.php..here u will autoload the library,models,helpers that you will use throughout u'r application.
u must autoload..url helper......cz

)after setting all then go to application folder.
you will get controller,model,view folders there..
just make u'r controller in controller folder.
models in model folder,
views in view folder.

buy for today....i will come back.if you hv any query then write here....but read the manual guide ...