Hi;
İ have niche website and created in march.. there are almost 70 article.. i don't start to link building because i don't know influentially how to :l
Is there any seo expert that give me some advices
Simply email other bloggers in your niche (the ones who are ranking for similar terms as you) and compel them to allow you to release an article on their website, with a link to your site. It helps to have a good email copy. They get a lot of requests, so if your email looks spammy, they will probably ignore it.
Anyways, most people will ignore you, many will ask you for money, and a few will let you guest post for free.
Once an agreement is made, then you send them content, with a link to your site embedded within it.
Try to link mostly with brand terms, raw urls, generic words, etc.
You shouldn't use your keyword very often when creating links, and almost never use the exact keyword.
It's also important to vary the link text each time you link to your site.
If you need to know more, it would help if you ask specific questions.