php/laravel/composer

hi -- again.

still experimenting with initial composer/laravel cmd.

a test cmd

in the test dir
 /var/www/html
sudo -u www-data composer -create-project --prefer-dist laravel/laravel foo
  --seems to produce a package/project..

whereas:
sudo -u www-data composer -create-project --prefer-dist laravel/alaravel foo
sudo -u www-data composer -create-project --prefer-dist laravel/laravela foo
both gen errs...

so..
i did
 sudo -w www-data composer show -a

and hey.... i get a list of
 foo/xxx
so I assume this ia a complete global list of apps
projects/packages???  not sure of versioning..

if what i did is "correct",
can i assume that "laravel/laravel" when creating a new project is
basically setting up the project with the "laravel" project??  but why
laravel/laravel???

why the two "laravel"

how would find out what the "sub items" of laravel are, and what their
functions are?

my searching hasn't turned up the information yet..

thanks