Just add the widget to the sidebar and tell it what Twitter username to follow for updates.
Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.
Here are some key features of "Simpul Youtube by Esotech":
· Get YouTube data via JSON
· Get data via YouTube ID
· Show video preview images
· Get data as text, video or images
· Embed video thumbnails
· Embed video galleries
· WordPress 3.4 or higher
What's New in This Release: [ read full changelog ]
· Fixed missing double-quote that resulted in a problem with target="_blank" links.