This is a bold text. Hit the Bold (B) button in the editor or hit ctrl + B button on keyboard

This is an italic text. Hit the Italic button (I) in the editor, or select the text and hit ctrl + i button on keyboard

And this text is underlined. Select the text and hit ctrl  + u buttons on keyboard

• This is a bulleted list
• Select the text and hit the bulleted list button in the editor
• And there you have your list

1. This is a numberd list
2. Select the text and hit the numberder list button in the editor
3. And then you have your list 

This is a heading H2

This is a heading H3

This is a heading H4