Picking a niche is really important when starting a website; it helps you with higher search engine rankings which means higher natural web traffic (more people coming to your site!).

The more specific a website is to a single topic, the faster your results online will be – this is because people coming on the site with the same interest will find value in whatever you have to provide based ONLY on that one topic.

To have an even more powerful effect, you can add keywords into your domain name – this helps with coming up on higher search engine rankings.
The tools used in this video are as follows:
Wordtracker Tool: http://freekeywords.wordtracker.com
Domain Maker Tool: http://MakeWords.com