1. Create new Zend project. 2. Create database by given sql files and connect it to the project. Database: tab for items(id, name, price); tab for admin(id, paypal_email, somth else what required by paypal) may be few of them tab for customer(id, name, email or anything what needed) tab for invoices(id, customer_id, amount, time, link_on_paypal_site or anyth else) Database goning be prefilled so you do not need to create any forms for admin or items. If you'll need additional fields for the db tables or create new tables plz let us know or create. 3. Create module in the project which is going to call paypal checkout. It's not clear for me what is simplier, to redirect to paypal page and proceed payment there, or create page on our site. I guess first way is simplier so probably we do that. Aslo you have to keep in mind that app is for mobile devices so whatever you decide is simplier. That what i think is going happen in the browser: 1. Invoice page( list of items, with prices, total) + button to proceed payment 2. Paypal piece : enter you email and pass. Here must be done next: invoice sent on email, or collect payment straight away. Whatever is simplier(I think second way) 3. Confirmation 4. Place invoice ditails and link in the db 5. Optional(if possible) link back to app. For example index/index . In default module create index/indexAction where there is a link to invoice to the paypal/invoice(as example) Any questions please email developer directly (vadim) Desired Skills: MySQL, PHP, Zend Keywords: Software Application, MySQL, PHP, Zend