When embarking on a job search, you'll probably be expected to provide most or all of the following for each position for which you apply:
For an interview, it may be necessary to prepare a job talk, particularly if you are interviewing for an academic position. You should also make sure that you have determined what questions you want to ask, and what factors will weigh for or against a job before you go on an interview.
Finally, most job searches end with a period of negotiation between you and your future employer. You should ask your advisor or colleagues about what aspects of the offer are likely to be open for negotiation in your field and for the specific position you are pursuing.