Exploring Google Chrome

Chrome Extension 

If you know the plug-in in the Firefox browser, then for Google Chrome users can get similar features in Chrome which is called extension

Like the other plug-in, extensions are a means to add feature and functionality into the browser. For some browsers, by default already has a plug-in that embed, sometimes it causes inconvenience. The reason, not all users require a browser plug-in that included all that.You will not experience this again in Chrome because you can customize it, what you need and what you don’t need.

There are different type of Chrome extension you can find:

Browser actions
These extensions add a button next to the Page and Tools menus to let you conveniently perform a task (such as accessing a site or checking for updates) no matter what page you're visiting. For an example, Blog This! Extension. Add a BlogThis! button to the browser toolbar, which lets you post to your Blogger blog from any webpage with just one click.

Once you add the BlogThis! button to your browser toolbar, blogging will be a snap (or rather, a click). Click the button to open Blogger in a new application window. The new post is pre-populated with a link to the web page you're on, as well as any text you've highlighted on that page. Edit the post to your liking and post it instantly to your blog!

Page actions
These extensions can detect whenever you're on a certain type of page and display an icon in the address bar. Click the icon to do an action on the page.

For example, RSS Subscription Extension displays a small icon whenever it detects a feed on the page you're visiting. You'd click the icon to instantly subscribe to the feed.

Content scripts

If this extension detects that the page language is different from language you're using for Google Chrome, it will add a banner to the top of page that ask your confirmation whether you want to translate the language or not.

There are hundreds of Chrome extension you can use in you Chrome browser. Some of the most popular are Google Mail Checker, Download, Cooliris, BlogThis!, Google Dictionary, Google Translate, etc.

You can visit below link to directly find hundreds of Chrome extension:

https://chrome.google.com/extensions?hl=en-US

Chrome Theme

There are two themes category in Chrome, i.e. theme by Google and theme by artist. 

Visit this link https://tools.google.com/chrome/intl/en/themes/index.html to see Chrome theme gallery.

What you need to do is explore the themes gallery and click Apply button on the theme you want to apply.