Even if you are not a graduate, the principles and key information will be relevant at all levels so you can still make use of them. To help you formulate your responses to questions, it is important to focus on the job requirements and continually review how your skills, qualities and achievements meet those needs. A useful framework is to begin by writing down the main requirements of the job, and listing alongside your matching 'qualifications'. The key here is to anticipate their questions. Focus on things you are good at, and which directly relate to the target job.
Frustrations are a normal part of any job.
A few basic preparations can help to smooth your path on the day. Be pleasant and polite to everyone you meet. It pays to make a favourable impression with everyone. Good personal presentation is absolutely key to success. The well-used phrase that first impressions count is never so true as in an interview situation.