Vintage Signature sewing machine Machine turns on but Don’t know how to work It

I plugged it in and it turnings on and start stitching but i don’t know how to work this device so i don’t know if it works or not . So sold as is!!!! The Vintage Signature 543210 sewing machine is a classic piece from the household class of sewing machines. With its electric operation and multiple stitch patterns, including buttonhole-stitch and stitch width/length adjustment, it is suitable for a variety of materials such as leather, denim, and wool. This portable machine is perfect for those looking to explore their crafting skills and create unique projects with precision and ease.

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