I want to learn web-design to come true my dream which I canmake dream come true, to work while traveling and promote to selling Japanese products to the world because there are. Japan has hundreds of great high-quality products and respectable culture in Japangood culture, but many Japanese are not good at selling them and don’t know how to promote them to the world especially in traditional industries.

This is a bit long, so it should be broken up into a few sentences. "Promote" needs an object to go with it, hence "promote them."

In addition, they don’t have the confidence to negotiate in English.

I want to support them and improve the Japanese economy.

I want to learn web-design to come trumake my dream which I cancome true, to work while traveling and promote toand sell Japanese products to the world because there are hundreds of great quality products andfrom Japan, it has a very respectable culture in Japan b. But many Japanese are not good at selling them and don’t know how to promote to the world especially in traditional industries.

I am not sure about the first "," I put in. Perhaps there should be a ";" there instead!

I want to support them and improve the Japanese economy.