Shantz WP QOTD is the coolest plugin to add quotes to your wordpress blog posts and sidebars in a few easy clicks.
The Shantz-WP-QOTD plugin can be installed in following easy steps:
Unzip "shantz-wp-qotd" archive and put all files into your "plugins" folder (/wp-content/plugins/). It is advisable to create a sub directory into the plugins folder, like /wp-content/plugins/shantz-wp-qotd/
Activate the plugin
Go to Options > Shantz WP Quotes, adjust your settings and save them.
For adding and configuring widget to sidebar, go to Presentation > Widgets.