I looked around and found a folder type cover at Staples that is rubberized and offers some protection but good access.
Then there are the more extreme but get bigger. Lifeproof I thought is the best of those and actually protects the ports and supposedly is submersible. However they get large and are not easy to install and reinstal.
Google Earth and sky both, Google maps will navigate and show you google earth images as you drive and street level which is sort of scary invasive.
I also am currently exploring MotionXHDGPS Drive it navigates where the not so great quads in MotionX GPS HD only shows rumb line and great circle nav. Even a Hummer can't do that.
Local weather apps are nice as well as the Weather Channel. I like Intellicast radar that shows wind fields and details for my sailing.
I don't know how to tell you which one this is but it's a ipad user guide and it looks just like the settings menu and you can access it thru a screen app icon.
You can scroll thru those apps and find the one with an icon that looks like that.
There are something like 750,000 apps!!
Tethering to a laptop is nice
or in my case I have a booster hopefully coming late today for my Iphone 5 and I can tether that to my ipad4 since at this time there is no 4G LTE other than the cradle style that would work with the ipad. That is for my offroad navigation more that anything.
The ipad is faster connection than my iphone 5 which is already fast.
The ipad 4 is about the same on ATT LTE as it is on my wifi.
20.85 down on one test and 6.28 up no lag there.
another fun app is speed test. I'm using one by OOKLA. from speedtest.net
it goes on forever with these apps...........
Have fun. I love mine.