Abacus 101: Beginners Abacus & Mental Math: Learn The Story, Concepts & Basics Product Description This is a simple guidebook for people who are interested in learning the introduction of how an Abacus works. The book includes simple explanation of the theory of abacus, how to read an abacus, and how to use an abacus to do simple calculation. The book includes a rule sheet for those who is interested in depth learning. At its simplest, abacus is a language that will translate numbers into beads. It will train your brain muscles to better focus, enhance your memory and become more observational. Learning to read numbers on an abacus really does open up a whole new world to explore. Shipping Payment Returns Shipping for this item is free in the 48 continental United States. We do not offer shipping to Alaska, Hawaii, Puerto Rico, US Territories, APO & FPO. After your order has been shipped, you will receive an e-mail with the name of the carrier and the tracking number. We accept payments through PayPal. You may use a major credit card via PayPal. For all “Buy It Now” items, immediate payment is required. We permit returns if you are not satisfied with your purchase. Your return request must be initiated within 30 days of the purchase date. To initiate a return, please contact us through the eBay Message Center. You will receive an RMA number to ensure proper handling of the return. We do not provide refunds for a return WITHOUT an RMA number. You will be refunded in full, minus the shipping and handling expenses incurred at time of purchase.