Build simple three page order demo in codeignitor, php mysql

This is not a project to be commercial, it is for me to learn. Step 1. Create an ORDER over view page, to list current orders, date, info etc. Will have 3 buttons, Create New, Edit and View (PIC 1) Step 2. Create an Order creation page. auto incremental order number, Customer name drop down list, with ABILITY to add if missing. Items, drop down list with automatic fill once you start typing. On CREATE INVOICE button press Step 3 (PIC 2) Step 3. Output of PDF file, traditional invoice as PIC 3 shows. Again, this is not for Production, but as a training template for me. MODEL/VIEW/CONTROLLER files, Codeignitor framework. Step 3. a CRUD table that can see all orders.