Google Apps are:
- Play Store
- GMail
- Google Keyboard
- Hangouts?
among others. I don’t have them so I don’t know what else is included, except for some (anti)services:
- Location Provider
- Sync
- Voice Input
So it’s nothing you really need. Lots of us are living without google.
Btw: Could someone who knows exactly whats included in gapps/ google services make an entry in our Dictionary? thanks.