I would give an advice to the student to feel always confident instead of being coy and reluctant while answering 'sneaky' questions made by the supervisor or the manager of the company. That means, that one has to be prepared, and read before the interview some things about the policy and the goals of the company. Always smiling is the best way to show to an employer that you can attract more than a bunch of customers, while working, and during the interview to look comfortable, and with good and clean clothing, a nice watch, that usually shows that you are very typical to your work. Smiling, also gives a positive energy to the workplace and to the employer, and it is the key to get hired and a good sign of a future co-operation if the manager enjoys the conversation too. I would say to the student to not be in hurry, and find and write on his application the best three references he had with their telephones, and give permission to the company to call them if necessary.
Keeping notes on his tablet would be the next advice, so that he won't forget all important tasks that have to be completed, and avoid using papers instead and get totally confused and frustrated.
As for the training, I would recommend to the student, to get familiar with spreadsheets, Microsoft Office, Drive, Dropbox, and learn how to convert files like pdf's to rtf's and vice versa.
Technical Writing, including cover and query letters may be hard to write at the beginning, and also it's necessary to know how to rely on emails or send notifications and updates to his customers. Statistics, is also an important tool of every contemporary business to track everything- from the economy of the company, to the number of visitors of the company's website - has to know how to be a blogger; the most important and depending each company, is to avoid getting angry on the telephone while communicating with customers who complaining enough, yelling, or threatening. There is always a way to calm them down and promise them that everything will be take care of soon. They will appreciate it so much, and such a good representative never loses his customers.
The most difficult thing to achieve at office but it's not always a requirement to get hired is the typing speed. - frowning-