Zeus is a mythological figure from the Greek Religion. Scientology does not contain any teaching about Zeus. A person who practice Scientology is free to chose his own personal beliefs, and Scientology does not interfere with one's personal faith. A person can believe in Zeus and still practice Scientology.
yes
it is called scientology
Tom Cruise's religion is Scientology which is also practices.
Scientology is in a small minority in all countries where it is found. There are no reliable statistics, but the country with the largest number of Scientologists would be the United States.
Scientology is not a faith based religion. It is an applied religious philosophy. It offers tools that one can use in his own life. One is not asked to worship a God or Gods in Scientology. What God is, is up to each personal understanding. People from all faiths practice Scientology. You can be a Christian Scientologist or a Muslim Scientologist, it doesn't matter.
Scientology has often been accused of using dirty tricks to attract people, and to keep them. It has in fact been outlawed in some countries. To learn more about Scientology, I suggest you start with the Wikipedia article, http://en.wikipedia.org/wiki/Scientology. There is also a more specific article on controversies here: http://en.wikipedia.org/wiki/Scientology_controversies
Scientology is Fake.
You have to take a class for Scientology.
There are over 11'000 Scientology churches, missions and groups worldwide. To find the closest one to you, you can use the "Scientology church locator" on the Scientology website. That is a map that shows you the location of all Scientology churches and missions.
Yes, many children do and there are no age restrictions as to who may participate in Scientology auditing or training. Some Scientology Churches conduct courses and study programs specifically designed for young people. Children below the age of majority must first obtain written consent from their parents or guardian to participate in Scientology services. Like adherents of other religions, Scientologists are very proud when their children join them in the practice of their religion.
No African countries practice Buddhism as their main religion.