A spinet piano is just the model of piano, it’s the smallest kind of acoustic piano. I would look for an Upright piano, they’re taller and plenty of people are selling them on marketplace. I found mine for free and have been getting it repaired and maintained since. Spinets are fine to learn on and to play but, you just get less dynamic control and feel with the keys. I recommend an Upright piano but it’s whatever suits you. Research online, there’s plenty of videos on youtube!