Getting the interview means your resume did its job. What happens in the room is a separate skill, and it's one you can practice.
These guides walk through the whole sequence. Researching the employer before you go in. What interviewers are actually assessing, including the body language they read before you've said much. Which questions you should ask, and what it signals when you ask none. How to follow up afterwards without becoming a nuisance.
Etiquette matters more than most candidates expect, so there's coverage of that too, from how you greet people to the thank you note that still gets noticed.
If you'd like to rehearse with a coach before the real thing, our interview coaching service post explains what a session involves.