how to jump my character to fixed distance

Hello everyone, I am new to unity3d and I love it! Now, I am working on a game which is very similar to this one:https://youtu.be/3X26uYA0RgY (give it up for Android) and I would like to know how the jump mechanism works? Right now, am using whenever the player is on ground am giving next tail as a target and am lerp to that position while learping am adding -gravity .it done .But jump effect not like the jump in the game(give it up).

this thing is more important

Moreover, I want to know how the Camera in the game tracks the player? Because at the moment my camera keeps the player at the centre of the game all the time which is a bit annoying. Any help or advice will be greatly appreciated. Thanks!