I've never had a smart phone/pad of any kind so my family decided they weren't taking it anymore and gifted me an iOS doohickey yesterday. It's a fancy new iphone 7 with service I'll never pay for, and apparently I'm getting a hand me down ipad soon as well.

So on to my question: Where do I find reliable and safe information on jailbreaking this thing? I got this iMazing soft that's supposed to let me reinstall the OS or go back to previous backups if things don't go right. That's about as far as I've gotten, apart from some shifty looking websites and youtube vids I don't have any reason to trust.