You should write at least 1 to 3 articles per day. The more articles you write, the more traffic you'll recieve to your website. Each article should be unique that way your articles look different from others.
Where do I post my articles?
You can Google "article directory" and you'll get a list of places you can post your articles for free. You'll want to post each article you write to each directory you feel is great for your article.
OR use Article Submission Softwares.
Do what the EXPERTS DO and save time by using a good article submission software. It will take weeks to manually submit each and every article one by one to each directory.