Information about your prospective employer is of little value during the interview since whether you will be employed or not depends entirely on your own ability, experience, or knowledge required for the job.
有关你未来老板的信息对你面试的意义不大,因为你是否被雇用完全取决于你自己的能力、经验或该工作所需具备的知识.
be of n. = be adj.(n.的形容词) 当然是不能去掉了.
since “由于、既然”的意思,引导原因状语从句.