Error::unable to view all content of newly installed theme in magento 2.1.0 -

[as per magento-2 official guide's instruction on changing theme on page-562]

newly installed theme folder in copied in

[magento_root]/app/design/frontend/magento/[theme_name]/web 

but showing new themes title porto ecommerce , other options , remaining contents of default website no css , images..

how display contents new theme?