You asked
Is the sony a9 good for beginners?
Honestly, I wouldn't start with the a9. It's a 2017 full-frame camera built for fast action, which makes it more specialised than most beginners need. My first camera guide suggests a mirrorless body with an APS-C sensor and its kit zoom, because the money goes further in lenses.
If you already have an a9, or find a used one, it will still take great pictures. For everyday shooting, these Sony E-mount zooms are sensible places to start:
If you want to save money, read buying used first.
Written by Claude from this site's pages.