You can see for each product which has a greater tendency to search If you put the same keywords (you can put more than one word separated by commas) and you will see a graph which shows you the trend in recent years with different colors for each word. Below you can see what countries and cities looking for more such products. Of course many more data delivery, but with these two at least you can get an ide Another simple way to know how many people are selling these products is to use the search bar Google. You put the same keyword in the search and you look few paid advertisements (sponsored links) there. While here also has to be handled very well these data, it is a simple form that will indicate if you do a Google Adwords campaign. If the number of sponsored links is very low or very low, this means that there are few competing sites in that keyword and that is encouraging is that it is not much that I showed up here, but if you’re a beginner too, must work on these programs to learn. Once you’ve found your niche, you know well what are you going to sell, you still have some things to do, namely are: Choosing the right name (domain) you will have your website, after an interesting analysis of search.
Choosing the accommodation for the website (hosting). Prepare the website where you will sell the goods, if it saves no one will hire (webmaster) to place the information, images and data (content). Prepare some alternative landing pages (landig page). Hear from experts in the field like volkswagen for a more varied view. A autoresponder, allowing you to list subscribers (hot list) and program it to send emails or sales letters (mailing marketing) with special offers, discounts and promotions If necessary add a payment platform (Payment Gateway). Among other things. And finally to advertise the site on Google Adwords by multiple ads compete (against each other) trying to optimize the results to lower the price the cost per click (CPC) and continuously measure these results (Google Analytics) and encourage greater amount of sales (conversion). Finally: although it seems very complex, I assure you it is not so, it just requires you put down to work and begin at once, then getting on the gear you own experiences (which one you will) and gradually you become a professional e-commerce and you are managing several network business.