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hi!
I would start from the small and fast-print model just to see printer is working. Usually, it's one of the inbuilt models like Benchy.
Then I would go to a model like this https://www.cgtrader.com/3d-print-models/various/test-models/3d-printer-test to see what my printer is capable of.
After this print, I would do the calibration (with Bambu Studio software) and reprint the previous print to see the difference.
Now, I would start searching for interesting models and start printing them by size, from smallest to much bigger. Just to be sure that I won't waste filament if something goes wrong.
In a month or two, you will be surprised how much do you already know and how easy it is to slice models in slicer by you own.
