By now you may be getting some targeted visitors, and also you may be in a position to confirm if they are the proper ones with tools like Google Analytics Demographics data. You also are looking to be sure your conversion path is working as it should be, so I highly put forward establishing conversion tracking. Do not try this just in your conversion pages, just like the checkout and thanks pages, but in addition the pre conversion pages, comparable to your shopping cart or touch page. This will give you more data to work with, and you may be capable of see which ads/key phrases and referral channels are bringing in the folks you are trying to allure. As you assemble more and more data, analyze it and make essential adjustments to your advertising approach and targeting efforts.
If you notice that your content is not being bought well, you are going to be targeting the inaccurate crowd.