Need urgent help by answering two question

Shuvomunjuri,

In answer to your first question, I would recommend just trying to outrank that result and create so much other information that it gets pushed down. If you want a black hat technique, you could always build spammy backlinks (lots of them) and point them at that particular URL.

For your second question, there is really too much data to explain to you but I can give you some general advice. The best place to start would be with target keywords for your website. Choose the keywords and their variations that you want to include so searchers can find your content.

You will want to include these keywords in the content on your website as well as the architecture of the website (meta tags, alt tags, and titles). Choose keywords that are important to the product or service you are marketing and build a page around each one. There are certain characteristics as to how you do this such as keyword density in website copy and the number of relevant keywords you should include in meta tags.

Another thing you can do to start is learn about what white hat and black hat SEO are and their differences. Depending on what you want to accomplish, there are some tactics that may not be good to practice.

The tasks mentioned above are known as internal or onsite SEO and are related to website architecture that you have direct control over. Another aspect is offsite SEO which can include creation of external web properties that contain target keywords, article marketing and syndication, optimization of video, document sharing, link building and a number of other tactics.

I would recommend you start here,

Learn SEO | SEOmoz

Best,

Shawn