After you get a new order notification by email, RSS, or mobile text message, you would log in to your account and check out the details screen for that order. If you need to get more information from your customer, you can send them an email right from within Shopify. Then package up the order, send it to the shipping address provided, then mark the order as shipped within Shopify to keep track of things. If your payment processor is set up to separately authorize and then capture funds, you have control over how much money is transferred after the order is placed and you can follow best online business practices by only completing the transaction when you ship the order.
You can access your new store below.