A litigation attorney will prepare their client for the court process. This may or may not involve mock trails and practice question sessions where the client is allowed to plan out what they are going to say in the court and what questions will be asked to support the case.
Most lawyers specializing in litigation belong to litigation law associations, and you can use this fact to your advantage as a way to track down potential attorneys. Litigation law associations are usually available on a state level, though some large cities have them too. Check the Internet for ones in your area.