Gas Buddy - finds gas prices where you are or any location you input. Of course you will need a wifi connection for that. You are going to need a wifi connection for most apps that will find campgrounds, prices, etc. Not a problem if you are home, at a campground with wifi, or any of the many free wifi locations in stores, fast food, etc.
Your Samsung tablet probably came with an Office suite but if not there are several at the Play Store that are free and MS Office compatible.
Also - Go to the Amazon apps page - there is a free Android app every day. These are paid apps that you get for free. Amazon does this as a promotion. Some are great, some for kids, some just skip. All you need is to be registered on Amazon to get the apps - set your tablet to "allow third party installations" in the settings - usually under security.
Enjoy!
