Blog Articles Content Writer | Technical content writer

I'm running a website. The website is based on Magazine theme. It is built on WordPress platform. It will have technical problems and programming related articles. Please review the current articles which are on my website, you will get the Idea what type of content I will be needing. So my goal is to generate the user on the website, they will subscribe for the daily, weekly and monthly updates and they will receive the articles as per their preferences. Also I will apply for the Google AdSense.

The similar website is https://medium.com/

My website will have the categories and articles similar to the reference website. Though I'm working on the new UI and planning to release this with the new content.

So My question is can you provide me the articles for the following categories "TECHNICAL", "Health", "Life Style" and many more...

I'm looking for 4 Articles/Week means around 15-17 articles/month. So what plan would you suggest to me? and what would be the cost for "cost/week", "cost/month" and "cost/article"?

This will be a long term project!!!