location match help

Hello

I am new to nginx. Please help me to set up following configuration
The root folder for site.com is /var/www(root /var/www)
But when somebody open http://site.com I want to load contents from /var/www/home
If somebody try http://site.com/anything I want to load contents from /var/www/anything

I tried following

root /var/www;
location = / {
root /var/www/home
}

didn't work

Also tried

location = / {
root /var/www/home
}

location / {
root /var/www
}

didn't work


Please help