How to take care of an iPhone 4?

I got an iPhone 4 and my parents said its the only phone I'm getting. I wanna take good care of it and maybe have it for like 6 or more years in the future. Is that possible? Haha also what is the BEST iPhone 4 case? I want those soft/squishy cases lol. NOT the hard ones. And also a case that can EASILY put on and take out. I don't know but I want either a blue or black one!

If you want to have your iPhone for that long, a "squishy" case won't protect it. Get a case like this:

http://store.apple.com/...-iphone-4s

Get a good case, screen protector, and try not to drop it/let others play with it.

How about this one http://www.onecase.co.uk/element-vapor-comp-case-for-iphone-4-4s-blue.html, or you can find more iphone cases you like at http://www.onecase.co.uk/