is used for shipping calculations, taxes, and optionally restricting your store to certain countries You can do this under WooCommerce -> Settings -> Base Location.
first store I highly suggest you start by only shipping to the US. Don't worry about international shipping until you get a request. Remember: it's much easier to build something simple today and update it tomorrow than to plan the perfect e-commerce site.
Twenty Twelve when building your site. Some themes override core WooCommerce functionality incorrectly and break things. It's best to use a simple theme for testing and then switch to a fancy theme once you're done.
setting under Product Data -> Inventory -> Sold Individually is useful for downloadable products since it doesn't make much sense to be able to buy two copies of a downloadable file.
products (think of a t- shirt with multiple sizes). Since there are so many options I'm going to cover it at the end. In case we don't get to it here's an excellent video tutorial: http://docs.woothemes.com/document/ product-variations/
traditional brick and mortar stores use to handle credit card transactions. Their POS systems validate the buyers card and the merchant account draws the funds. The funds sit there for a day or two and then they're deposited in to the bank account.
stores started coming online they needed a way to connect their store to their merchant account. Those systems that were invented at what we call traditional payment gateways.
so many e-commerce stores that don't need a merchant account there are a lot of services that combine the merchant account and the payment gateway together. So they validate and draw the funds. These are called modern payment gateways.
of ways. In the US you're most likely to tax someone when they're in the same state as you. This can be configured under WooCommerce -> Settings -> Taxes.
add a tax rate for your city. Make sure to set different priorities. Only one line item per rate per priority will be matched. More info: http://docs.woothemes.com/document/ setting-up-taxes-in-woocommerce/