How to do arithmetic with an abacus?

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The discussion centers on learning mental math and using an abacus for arithmetic. The user has successfully mastered basic addition, subtraction, multiplication, and division with the abacus but seeks guidance on advanced arithmetic techniques. Recommendations include the book "Rapid Math Tricks and Tips" by Edward H. Julius for mental math strategies. Additionally, a resource is provided that covers various abacus operations, including addition and square roots, indicating a comprehensive approach to mastering the tool.
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I've recently been into mental math and I'm learning how to do arithmetic mentally without the need of calculators or computers, I know that abacus could be a great help for me now, so I bought one. I've figured out how to add and subtract numbers, I also have figured out how to do multiplication and division for small 2 digit numbers, but I don't know how to do advanced arithmetic with an abacus. Do you know any good book that teaches arithmetic with abacus? and do you know any good material to learn how to do mental calculations?
 
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