Go into options and select "Smart Sync" this will allow you to see the beat grids

Hey DJ Sura,

Thanks for getting in touch,

First you will need to turn "Beat Grids" on.
1. Launch Serato DJ with your controller disconnected.
2. Click the SETUP button.
3. Navigate along to the DJ+Preference Tab.
4. You will see SMART SYNC as an option at the bottom. Enable it.
5. Close the SETUP window.

6. You will now need to analyze your music files in Serato DJ before beat grids will be visible.
-- There is an "ANALYZE FILES" button just above your CRATES window.
-- Drag your music files to this button.
-- Once the analyzing process has been finished, tracks will have a BPM value and beatgrids will be visible.

Let me know how you get on :)

Thanks.