I can't download apps on my iphone 3gs?

Recently, I decided to buy a second hand iphone 3gs because my friend sold it toe for a very cheap price and for me to try IOS. I never had an ios before because i'm not a fan. I prefer android. Now i can't download any apps because all it say everytime i download in app store is that i must have ios 7. But obviously iphone 3gs can only have ios 6. So i need help

Its antiquated by todays standards unfortunately just the way apple stuff seems to get old very quickly its unfortunate. Not all is lost however You should be able to get it jailbroken in no time using the correct software A simple search on the internet should bring up quite useful and handy tutorial videos and forums. After you get the phone jailbroke you should be able to download apps once again. You can even load a different operating system onto the device that makes the phones UI look up to date!
links of useful value:
www.whited00r.com/

You just have to find apps that haven't been updated to that point.