You will find many answers to your questions about Christian Science and about life in general in the book Science and Health with Key to the Scriptures, by Mary Baker Eddy, as well as on the sites listed below, which also give you addresses where you can buy or borrow this precious book.

Christian Science in Switzerland (in French and German)
Christian Science Reading Room in Geneva (in French)
Christian Science in France (in French)
Christian Science in Paris (in French)
Christian Science in Germany (in German)
Spirituality.com
The First Church of Christ, Scientist, Boston, USA