You asked
Is the nikon z7 good for beginners?
The Nikon Z7 is a capable camera, but I wouldn't call it an obvious first choice. It's a full frame body with 45.7 megapixels and in-body stabilisation, and it's a good used landscape camera. Full frame and high resolution also mean bigger files and a higher price than most beginners need.
My advice is to check how it feels in your hand before you buy, since handling and size matter more than spec sheets for a first camera. If it suits you, a sensible everyday kit would be the Nikon Z 24-70mm f/4 S for general shooting, the Nikon Z 24-200mm f/4-6.3 VR if you want one lens for travel, and the Nikon Z 50mm f/1.8 S for portraits.
Read Your first camera and buying used before deciding, and see the Nikon Z7 page for the full lens list.
Written by Claude from this site's pages.