The Online Career library (see section below for more info) provides a huge number of resources and tips. Here you can find a number of example résumés and CVs to give you an idea of what to expect.
Your CV is the first chance to show yourself to prospective employers. Keep it simple but make yourself stand out from the crowd. Download this document for tips on writing a good CV. Writing an application letter can be a fantastic opportunity to show your motivation and talents; this page gives you some advice.
In terms of the interview, make sure you prepare well. First impressions make a big difference. Make sure you dress appropriately and introduce yourself. Also be aware of your body language during an interview. Come prepared. This means thinking about some of the questions that you might be asked and doing some research into the role that you are applying to.