Hi, i would like to know what you suggest for SEO pourpose, i would like to start writing articles, but i don't know if is better to create a dedicated website or keep the same website, what do you think ?
Have your own blog. Don't just host a sub domain. See this as an example. Also you could use other's blogs for getting backlinks and to generate relevant traffic to your site. Having an internal blog is ideal to get searches on certain topics. And then those visitors could be influenced to make a purchase