Shipping your product is easy - for products under 5 lbs you want to use the US Postal Serviced - their priority service is exceptional, they supply you with free shipping supplies, and the cost is the cheapest in the industry. You can print online labels with Stamps.com, and you get free tracking (which normally costs $.45/package) when you print your postage online. Click on the link below to visit their website and see all the offers they have for new users:
You can also set up online shipping accounts for free with UPS and FedEx. They both allow you to print labels directly from their website, although not as easily as Stamps.com. You can find them here:
I would strongly recommend that you do your postage online with tracking or delivery confirmation. My experience is that, if you send packages out with delivery confirmation a certain percentage of the population will recognize that you don't have the ability to track the delivery of the package, and will contact you saying that they never received their package, leaving you with little choice but issueing them a credit or re-shipping their package. When we went to online postage with delivery confirmation our 'reshipments' went from about five per week to zero, which tells me that we were being frequently scammed.