Change Blogger Font Face In Posts

There are a few ways to do this:

1) Font Tag
<font face="Font Name">YOUR TEXT GOES HERE</font>

EX. If you wrote <font face="Comic Sans MS">Superman</font> in a New Post, the published result would look like this: Superman

2) Blogger Fonts and Colors Tool

• Press the Layout tab
  
• Press Fonts and Colors
  
• Press Text Font
  
• Choose your Font Family that you would like to use by pressing the
  button.
  
• Press Save Changes

NOTE: When you change Text Font face using this method, it changes the font face of the text on your entire website (not just the posts).