First of all, you need to prepare the basic knowledge of seal cutting. Therefore, I suggest you read some relevant information on the Internet, such as "Introduction to Seal Engraving".
Secondly, there is a seal script dictionary, which can also be looked up online. Because seals used in calligraphy and painting must be engraved with seal script fonts.
Then there are various tools, such as engraving knife, engraving bed, sandpaper, grindstone, brush, ink pad, etc.