Ref: http://devdocs.magento.com/guides/m1x/magefordev/mage-for-dev-2.html
ROUTES:
http://magento19.test/complexworld/index/showallblogposts XX
http://magento19.test/weblog/index/showallblogposts
CONTROLLER IN /home/teddy/Documents/works/magento19/app/code/local/Magentotutorial/Complexworld/controllers/IndexController.php XX
/home/teddy/Documents/works/magento19/app/code/local/Magentotutorial/Weblog/controllers/IndexController.php
MODEL IN
/home/teddy/Documents/works/magento19/app/code/local/Magentotutorial/Weblog/Model/Blogpost.php