New to Apple could really use some advice on which to buy?

I'm new to Apple, i've always been with android but i wanna try an apple device, which is the better option in regards to specs etc

Added (1). i forgot to mention i'm looking at either an ipod touch 6 or the iphone 5s, you know just to test the waters before i take the step of buying the newest iphone

Advice on an iPhone screen guard?

My wife scratched the screen on her iPhone - more of a scuff than a scratch. Has anyone had a screen guard installed after the glass was scratched/scuffed? If so, does it tend to hide the blemish at all?

Important! Recovering deleted data/messages/photos?

Recently, i restored my Iphone 6S and accidently deleted my up to date messages and photos, Is there anyway i can get them back? Or have they gone forever?

Right now i have got data from months ago that i don't want to see.

What's the best Fitbit to get? What are their differences?

I have seen my friends withthem and seem awesome. I just joined weight watchers and have been slowly but surley loosing weight. I want to buy one, possibly on Amazon prime but there are so many choices. I have an Iphone 6 plus. Would like it to track my cal burned steps and stairs. Not so worried about heart rate because id on't really know why I need to know that.

Iphone suddenly got burning hot?

Hi, I've got an Iphone 6 Plus and its recently began getting burning hot for no reason. I had it on charge and the battery was only half full but i took it off anyways in case tha'ts what the problem was. Its not very old I've had it for around 3 months but its not just getting warm, its burning hot so that i can't even hold it for long and keep getting temperature warnings on my screen. Any help or advice?

Added (1). I've taken it out of the case and i always shut my apps and I've put it to the lowest brightness. If i turn it off for a long time it gets cool but as soon as its on for around 10 minutes its already heated back up.