After learning Markdown, it takes much less time to format text. For example, if I wanted to bold text with a GUI, I would have to take my hands off the keyboard and click on the
B button. However, with Markdown, I can simply type two asterisks, the text I want bolded, and then two more asterisks. While this may seem more complicated, it's actually much faster once you get the hang of it.
That said, if I understand you correctly, there are icons that you can click if you don't want to learn Markdown. They should be appearing above the textbox. If you don't see them, please do tell.