The whole process of job hunting differs from country to country, so you must first know about some of the practices in the country where you are seeking employment.
The process starts of with your resumé or CV as it is called in some countries. This must be impecable and extremely professional looking. It also should be attractive. In some countries it should include your photograph, in others no. It should also be in the local language unless otherwise specified. It should also be accompanied by a covering letter in the local language stating your objectives, your reasons for seeking employment with that particular company, etc.
There is no hard and fast rule about the length of the CV, but it is generally accepted that as long as it covers all the important information such as your education and previous work experience - the shorter it is, the better it is. One or two pages at most should be just about right. All too often a very long and wordy CV will leave the reader bored and it will just end up getting put into the 'circular' file cabinet (wastebasket) without even being read.
The interview itself depends also on the country, company, customs, etc. It may be conducted by one person or by a panel of interviewers. It may be a single interview or it may be a series of different interviews designed to make their 'short list' even shorter in their search for the right candidate.
Arrive early, relax and dress appropriately. Obviously you will need to wear a suit and tie or business dress if you are looking for a management type position of some kind. You would not be required to dress so formally for a job as a supermarket cashier, etc.
Find out as much as you can about the company well before your interview. The more you know about the company the more you can figure out about the job. Also it will help you to create a list of questions that you should ask your interviewer(s). Yes, you SHOULD ask about the company during the interview, this shows the interviewer that you are interested in the company and not just about the job. This scores lots of points in most cases.
Know the local customs about 'personal space'. You want to get close enough to your interviewer to show you are engaged in the conversation and to engage him/her - but not so close as to make the interviewer feel uncomfortable or that you are invading his/her space. Body language is also very important during the interview. Sit straight, don't wiggle around in your chair, don't lean on the interviewer's desk or the conference table. You may place your forearms on the desk or table, but that's all. You may sit with your legs crossed, but it is better not to. Don't ever chew gum or smoke during an interview, even if it is acceptable in the country where you are being interviewed. The greeting handshake is also important, it should be firm enough to convey your confidence, but not so firm as to be aggressive. Always maintain eye contact with your interviewer and speak naturally and in an animated way. Look interested at all times.
Remember that the questions that you will be required to answer are different from what you may normally be asked at home. Some countries have a number of laws that prohibit certain kinds of questions. USA and Canada for example have strict laws which prohibit any questions that could even remotely lead to some kind of discrimination, so questions about number of children, marital status, sickness record, etc., are OUT. They can't be asked during the interview (in some cases they may be asked once the job offer is given). Other countries these questions can be asked during the interview phase, so be prepared. Don't just assume that one interview is the same as the next.
Here in Brazil, for example, many questions during the interview are quite common that would not be allowed in North America.
Relax, be confident and all should go well no matter where you are.
Cheers,
William James Woodward - Brazil Animator, Expat-blog