With the globalizing world, many people want to go abroad and gain different experiences. In order to live abroad, you need certain permissions regardless of your purpose to go abroad: work, education, family reunification, experience, etc.
There are lots of residence permits and visa types. The ease of obtaining these documents varies from country to country, and some countries may provide some facilities and support for certain types of people.
It is best to seek advice from a lawyer specializing in immigration law when deciding which document is the most advantageous for you and what kind of application is required.