learning the essentials of transactions


hi,what should i do so that i can deal with the transactions effeciently and effectively.should i have to learn some new things for the purpose.
To deal the transactions efficiently you have to roll up your sleeves and get technical with the nitty-gritty of transactions, credit card, integration with fulfillment systems, and customer service. you’ll also need to calculate tax, determine shipping costs, and securely process the customers’ preferred methods of payment.