Niche sites are basically anything and everything you want to write about. Something that you are basically good at or know alot about. If you have a talent and would like to show it off to people or inform them on how to do it. I think you should start a blog. A blog is easy to make and usually is free. I like to use Blogger.com for mine. It's simple to use and barely any coding is required. Plus you can make great income doing it also!
One thing that you will want to learn if your going to have a niche site or blog is the content on the blog is easy to read and is updated regulary. My TIP: make the niche about something that wouldnt needed to be changed everyday. Like you can talk about a xbox 360. We all know it will be along time before a new xbox console will be on the market, but you can update it along the lines of maybe talking about the new games! The best possible way you can get a income from your niche sites is traffic. You want to make sure you are actually getting people to read your niche site!
So after you have built your niche site or blog and you like the way it sounds and like the way it looks and you decide to make a little extra income, your going to have to set up some affiliate programs. Affiliate programs are something you can sign up for free and they will give a link you put in your blog and it will advertise on your niche site. Then you will get paid for it being on your niche site. You can get paid a variety of ways. You can get paid for page impressions,clicks, or referrals on so on. Just check out a few different ones and find what you are looking for. Using google adsense helps out alot too.
It Will Not Hurt To Try To Advertise a little bit. You can go to other peoples blogs or sites and give them insigt on what they wrote and then leave a link and they will probably do the same for you. This helps you both ways. You can gain some knowledge from other peoples experiences and you just left a link on thier blog so you just advertised a thier site. Try to pick popular sites to post your link on!
One Other Thing before I end this, make sure after you do all of this you should sign up for a rss feed. That is basically a site where you would have a couple links from other sites on your site in return other people will have your site linked on their site.
