Yes if you do not have any valid US Visa. No if you have a valid US Visa.
depending on what kind of computer you have. if you have a hp there is a program already on it
There is no such thing as a Puerto Rican visa. Puerto Rico is part of the United States and if a visa is needed by a visitor it will be a US visa.
No. Having a visa for the US doesn't grant you the possibility to enter Mexico; you need the corresponding visa from Mexico.
Yes US citizens need a visa.
If I am a resident of the US. Do I need a visa to go to Canada?
Then you can still get jobs from the job bulitin board and outlaw board.
Yes, to enter US visa is a must. Depending on the purpose of your visit the category differs from A to Z. For example B-1 is work visa, B-2 is tourist visa, F-1 is student visa etc.
If you are from a country that requires a Visa, then yes a child of any age will need a Visa.
Yes, unless you are already a US citizen you will need an immigrant visa that permits you to work, not a tourist visa.
Work visa can be got through employers only. Either company in US should recruit you and apply for your work visa or company in your home country also can send you to work in US on a work visa. Depending on the requirement and your eligibility you will be issued a visa with which you get authorization to work in US.
can i return to US with five years visa