You can check your level at any time in your profile, and compare it to other players by looking at their profiles.
Each time you redeem Units, the oldest Units will be redeemed first.
If you're already a subscriber, you can find all games available to you.
This allows you to access all your info in one place and benefit from exclusive privileges in your games.
You can also disconnect your guest from the overlay.
In addition to games for sale, there's also a large catalog of free and free-to-play games ripe for the picking.