The Page which comes after log in Google analytics is called as Google Analytics Home Page.
This page shows all accounts which are created by using respective (same) email address.
This page shows small summary about website performance corresponding to account.
While creating account you have been said to put your account name and website name. Folders are created after you create account by your account name and website name.
Account name folder is parent of website name folder.
All website data is kept under website name folder.
Read moreGoogle analytics Home page