How to advertise overseas?

Suddenly, I had an idea, if I advertise on oversea media, is the effect better? But in fact, I don’t understand oversea media, this questions I should consider:
1. Which can I choose, TV, newspaper or magazine? I think TV advertisement is the most expensive, and newspaper advertisement is cheapest.
2. If I choose newspaper, which newspaper can I choose? Maybe I can choose industry newspaper, but I have no idea which newspaper belongs to industry newspaper.
3. If I advertise in different country, would I choose different country’s newspaper? Are there any newspaper can be read in several different countries?
If you have some experience in advertisement, please shore there, thanks very much.