To prepare for a deposition, you should research the law and the theory of the case, review all documents that were exchanged between you and the opposing party, and read the case and the exhibits presented. You should also meet and practice with your attorney and understand your role and the attorney's questions. You should be consistent and credible with your answers and avoid forming a connection with the attorney asking questions.

Here are some tips on how to prepare yourself in advance of a deposition:
- Remain calm, no matter how many questions are asked.
- Remember that the deposition is not a courtroom and you shouldn’t be nervous about making mistakes.
- If you don’t know an answer to a question, say so – it’s better than guessing or fabricating something on the spot.

I hope this helps!