First step when making a tutorial, is making sure people are actually able to read it. Since that's your main goal.
This font is horrible, and makes on-screen reading even harder then it allready is.
General rule of thumb:
- Headlines, heads, important statements, highlights = A typical
Sans-serif font.
- Parts where people are gonna have to do some reading: A typical
serif font. This font gets it's name from serifs (tails) on the non capital letters, that point towards the next letter/word thus making it easier to read/follow.
- Decorative fonts, is a whole other group, and typically used to be stupid on the net really
