RUSH SALE! Mode of Payment: Gcash or Paymaya Once the order is paid thru Gcash or Paymaya, we will process your order. Electronic Fulfillment Only. We will send the PDF file thru you email address Email address is required Format: PDF Do not order if you are expecting a physical book. This is NOT a physical book. This is an electronic book in PDF format. Electronic Fulfillment only so please include your email address when ordering. Thanks! This is very cheap for you mobile device!