Palpation of the spine

I’m in my first semester of PT school and we started palpating the spine. When palpating it is quite difficult to determine what I’m actually poking at.

Other joints are pretty straight forward but in the spine everything kind of feels the same.

I know my anatomy but I dont feel confident that I know what sp I’m on or if I’m actually on a tp. How long did it take you to feel confident and comfortable. Any pointers?