I go over all the tools I use in this tutorial: [link]
I would definitely not
recommend using your hands for details, as they leave fingerprints, and the amount of texture you can produce is very limited. Everyone who tries sculpting should at least have
one wooden tool similar to third one on the left, and a metallic, pointy tool like the second one on the left.
Even if you don't want to texture your sculptures, you should keep in mind that if you don't use any tools, all your sculptures will look a bit "round", since you are not able to produce holes or deep concave shapes.