I am looking for a starter kit- samples for learn web development. my goal is create a ecommerce web site.
You may find it interesting to look over some other systems already out there, try downloading a copy of osCommerce and Magento. Writing an e-commerce system from scratch with (I presume) no prior PHP knowledge is a mammoth task.
As you have tagged the question with 'cakephp' I shall post a link to the CakePHP book tutorial page :)
I would start out with www3 school's php tutorial, go all the way through the MySQL tutorail portion as well, then download a good text editor, and only then would I download a content management system. I'm afraid that while magento and other similar ecommerce platforms are relatively easy, you will look at page after page of unrecognizable code. It's much better to start off knowing some of the basics and working your way up.
I would also highly recommend tizag.com (sorry I can't link to it, I don't have enough rep) as a good source for tutorials. Keep in mind that knowing php only isn't sufficient to be able to run a website (and know what's going on). Make sure you study up on both HTML, and a database language (most likely MySQL, PostGreSQL is another popular platform for retailers... but I would recomend MySQL).