1. Conventions and project structure
2. MVC architecture
   1. Code structure
      1. Do not add Store, Controller, View suffix to stores,controllers
      2. getOrderOrdersStoreStore
   2. Define controller
      1. Extend 'Ext.app.Controller'
      2. Event must be lowercase
   3. View
   4. Store
      1. ajax
3. Class system
   1. Components
      1. http://dev.sencha.com/deploy/ext-4.0.7-gpl/docs/index.html#!/api/Ext.Component
4. Component query
5. Ext.getBody