A NOT official "lite" fork of Jetpack plugin containing only Stats and WP.me Shortlinks modules. All other modules removed (files and code).
NO. Jepack Lite IS NOT an official plugin by Automattic or WordPress.com, it's only a fork made by an user and shared for people who wants to use WP stats and WP.me shortener without nothing more.
If you're looking for the official plugin go to Jetpack
Jetpack Lite requires a connection to WordPress.com to enable all features. This is a different account than the one you use to log into your self-hosted WordPress. If you can log into http://wordpress.com, then you already have a WordPress.com account. If you can't, then you can easily create one as part of the installation of Jetpack Lite.
Once you've installed Jetpack Lite, your stats will be available via the "Site Stats" menu which appears under the dashboard menu. And you can access to Jetpack settings under settings menu.
I'll only update this plugin when Stats or WP.me shortlinks can be affected by a new released of the official Jetpack by WordPress.com
Remember, if you don't feel confortable using this unofficial fork or need a great support, it's better to install the official Jetpack.