How can you make a good decision on the job?

Practice! Typically employers will ask the same 20 questions (If that many). You can go to your local bookstore to read up on these questions. Also, when you are being interviewed, the most "important" questions are the cause and effect questions. For example, "Tell me a situation where the customer was unhappy, and what you did to resolve the issue." ALWAYS pause for a second so they think that you are taking the time to come up with an answer. Then give a specific example of the situation, what specific actions you did (preferably on your own without help) and the outcome. From my experience of interviewing tellers, they will use the same example over and over! If you have an idea of what will be asked, you won't feel under pressure. Another great technique is just practicing how to change an interview into a conversation (with the appropriate tone of course). Simple things like creating a PC joke or turning the question back to the interviewer is a great start. These conversational interviews are more relaxed, and you typically have a more realistic answer.. instead of a practiced one.