When you have found a developer who is going to build your website, you need to find the content for your website, choose colours and graphics and think of the page titles for each page. The page titles could be the key phrases people are likely to search for in your product area or even better the niche phrases.
Once the website is built you then have to think about promoting your website. Building up your backward links is becoming increasingly important and will eventually lead to higher search engine positions and therefore more traffic to your website.
Writing articles like the one you are reading is also of value as people are able to use them for free on their website, thus creating you an additional backward link.
If you would like to earn a little extra money from the website you could try google adsense. These are ads that the search engine google will place on your website. When a visitor clicks on the ad you earn money.