Depends on your setup, but there are some pretty nice FragMaps available for free as a Foundry module: https://foundryvtt.com/packages/fragmaps-free
The official companion app isn't too bad: https://cyberpunkred.com/#/ Easy way to generate characters and mooks. I believe the paid mobile version has some functionality for random encounters and some lore stuff.
Make sure to check out the 'DLC' available on the main website: https://rtalsoriangames.com/downloads/
There are some screamsheets in there that might help frame a one-shot or your first game. There's also a few one-shots in the main book.
If you're looking to establish something longer, the Tales From the Red book has a lot of dope multi-session missions in it.
Highly suggest JonJonTheWise on youtube for content and rules discussion.
Can dump more, so if you have any questions, hit me up. :D