You would need to download mods, or if you mean third person mode, press F5 on your keyboard.
F4
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You cannot zoom in on vanilla Minecraft. You need to install the Optifine Mod for this feature.
The zoom feature is a feature from the mod optifine, the zoom occurs when you press left ctrl.
Press F5
Get the client optifine. Then once it is loaded up, press left ctrl to zoom !
I have posted a link in the related links for the image of the ID list for Minecraft. You can zoom in the image, as it is a little small, by clicking on the image where you wish to zoom in at.
You can't 'zoom in', unless you mean the FOV: field of view, which can be found under the ESC -> Options menu.
To get Minecraft for free, you need to download it on Xbox.
There is no way to get the full version of minecraft for free, but you can play Minecraft Classic for free.
OptiFine is a mod that allows you to zoom in and out, and also enhances performance. To zoom in, press and hold "CTRL." This will zoom you in. Make sure it is the left "CTRL," and not the right.
You can play Minecraft Classic for free from the Minecraft webpage.