does somebody know about an extension with that i can manage and display different shops with the following deatils:
- zip code
- opening time
- skills at this location
- a map
- phone number
Your question is probably too broad to provide an accurate answer but I'll throw in a suggestion anyway.
FocalPoint is free and does a great job of displaying location information including custom content like a CCK so you can add fields for the address, zip code, opening times, skills, map, phone number and whatever else you like.