Google "voxelab aquila tutorials" and there are some how to videos
A couple of examples
Plus their user manual
It appears that this printer is a clone of the Creality Ender 3 V2 so if it is anything like mine there were test print files on the SD card that contains all the software.
The Ender was just plug and play ie put in the SD card and turn it on and it loaded everything.
Bed levelling is vitally important to get quality prints as I am finding out.
Cura is the most recommended slicing program for beginners it is available as a free download.
An improved engineering workflow with Ultimaker Cura 4.10 Ultimaker Cura 4.10 has arrived, and features a major update for Ultimaker Professional and Ultimaker Excellence subscribers. With it, these users are now able to import native CAD files directly into Ultimaker Cura – creating an improved...
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UltiMaker Cura is free, easy-to-use 3D printing software trusted by millions of users. Fine-tune your 3D model with 400+ settings for the best slicing and printing results.
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That should keep you busy for a while.