I'm currently Письмо an Статья where I need to insert Обои into the article. I don't know how most of Ты do it, but I want to know it myself. Can Ты help me?

It tells Ты on the right of editing an Статья how to do it.

Go to the bottom of the page where it says bottom image, then Загрузить your image. If it's the first image Ты upload, it'll be 'img1'. If Ты Загрузить a 2nd image, it becomes 'img2' etc.

Type in (img1 center, large) but use the square brackets like ] [ in the Космос where Ты are typing out your article, like the example in the pic:

Then press Предварительный просмотр to see if you've done it right.