The Setup screen allows you to tweak settings and preferences in Serato DJ Pro.

You can check for software updates by clicking the Check For Updates button in the bottom left corner of the Setup screen.

You may also change the language that Serato DJ Pro is displayed in, by using the Language drop down menu in the bottom right hand corner of the Setup screen.

Click the tabs near the top to switch between groups of options; DJ Preferences, Audio, Library + Display, Mixer, MIDI (displays only with connected  hardware), and Expansion Packs.