In order to work in Sweden, you must have a work permit. Read more here about how to apply for a work permit or for a residence permit as a self-employed person or a visiting researcher.
Read more about it here.
Read more about it here
In order to join your family or relative in Sweden, you must have a residence permit. Read more here about how to apply for yourself and on behalf of your child.
For information about protection and asylum in Sweden, please visit Migrationsverkets webpage