If you have a Gmail account, you have also access to most of Google free services - Drive, Calendar and Maps... Google Chrome can link your Google account to those services and save your settings in the cloud, so you can access those services with your own settings.
Google Chrome lets you customize your browser with themes, applications, add-ons and games. Enhance your web experience and add specific functionality to your browser with any of the thousand apps from the Chrome Web Store.
Keep your bookmarks, login information, themes & apps and general settings in Google Chrome wherever you go. Link your Google account to Chrome and have them in all the computers you want or need.
Get 5 GB of free storage on Drive thanks to Google Chrome and save your files there. You can share them with any person you want and you can access them from any device. Of course, also from your Google Chrome browser.