Since you have a few drones in the past, flying it will be a breeze.
You just have to learn the little DJI
M2Z idiosyncrasies.
The manual takes a lot of absorbing !
Hard part is not being able to just flip back or forward a few pages on a real manual, being a pdf doc, but you can cope.
In general, you can take in so much in one hit, try and retain the basic flight stuff for now, then learn other less important bits later (like camera ops).
Eg. read up on RTH settings and how / when to use each, practice setting up with props removed somewhere comfy at home.
Go thorough menu settings same time.
I would add watch a lot of
M2Z YouTube vids, great way to learn to important bits first.
Try
M2Z first flight search on YT.
And read up here on the forum about fly aways and the causes.
Go fly.
Safe and open, it really flies itself anyway, you are just operating a computer.
Work out a few things you are missing, then learn a few more of those ready for next flight.
Enjoy.