Some interesting info from a Polish site about the markers you can find on the map, which indicate either side missions or places/people/services you can visit/acquire:
So apart from shops where you can buy food, drink or guns you can find:
- medics
- netrunners
- martial arts instructors
- ripperdocs
- techies
- sex workers
You can also go to a bar and have a drink. When it comes to map markers that are main/side quests or activities, they managed to notice:
- Gun for Hire;
- Search and Recover;
- Thievery;
- Agent Saboteur;
- SOS Merc Needed;
- Special Delivery;
- Traveling Vendor;
- Convoy.
You can also get jobs from fixers or help NCPD so you will find following markers:
- Fixer;
- Client;
- NCPD Scanner Hustles;
- Assault in Progress;
- Suspected Organized Crime Action;
- Illegal Entry;
- Reported Crime;
- Cyber Psycho Sighting;
- Suspected Smuggling Activity.
I know it's just a list but I think it's a nice sneak peek at the activities that will be waiting for us in the game world.