I'm no pro on CV/resume/cover letter/motivational letter development, but this career planner article from John's Hopkins nails it. I stumbled up on this while searching several top US public health graduate schools' career sites. I wanted to share because it is written well, and has excellent examples to accompany the advice given.
After moving abroad, I found myself having to relearn this information. In Europe, as opposed to the US, the format for CVs and resumes are different. For example, the EuroPass. During a job fair I attended at the EU headquarters in Brussels, I noticed that everyone had a picture on their CV. Legal problems aside, this is not a social norm in the US, and may in fact, startle the employer because of discrimination issues (I'm not agreeing/disagreeing just making the point to understand the cultural norms before applying).