You basically have 2 options to get your store to show up on Google:
Put paid ads in Google (Adwords). These are the ads that appear on top of your search results and sometimes on the right side of the browser. For more information, read this page or for advanced knowledge of Google Adwords, go to the Learning Center.
Optimise your personal Tostadora store and your own web store for popular search engines including Google, Yahoo and MSN. In this way, you will appear in unpaid search results. Unfortunately, this is quite complex and impossible to guarantee results within a reasonable time. Here's a tutorial on how to try it.