ohhh god how to write article in this app

Hi,

you can write an article by clicking on the Forum tab there you will find a bar at the top of the page on which there are discover, your messages and then there is the "start a topic"  button by clicking it you will be directed to the page where you can select your categories and easily publish your article under the chosen category. You can add tags also to your articles there.

I hope this answer will help you.