Check to see if there are any train tracks that may delay you, rush hour traffic, or any other obstructions. Be positive in all of your responses. If you left a job because of a poor supervisor, don't highlight that. Instead, if truthful, mention that a position was offered to you that seemed more challenging and along the lines of your career development goals. Never lie, but always pull out the positive.
Every situation has one.
Never ask about money during the 1st interview unless it is brought up. Do not be vague. For example, I recently worked with a cross sectional number of employees from ABC company where I was able to learn about an engineer's perspective as well as an accountant's and human resource representative's perspective. Always act professional. If an employer appears very casual, err on the side of not being casual.