There is a quick way to access your google or Gmail address book, go to google.com/contacts or type the URL in the address bar. Also you can add a shortcut to the standalone Google Contacts page in Google's app launcher by below steps.
1. go to google.com/contacts and sign in
2. click the app launcher icon
3. click "add a shortcut" next to the Contacts icon
4. you can move the icon using drag and drop
Also Google has integrated cool feature including all keyboard shortcuts. Goto Contacts and hit "?" for the full list
