The camera on the back doesn't work anymore but it still takes selfie pictures what do you suggest will fix this?

At the bottom right corner, when you have the camera on, is a picture of a camera with some arrows. Click that and it will go to front facing camera so you can take regular pictures. To take selfies just click that camera pic again. Hope this helps.

Go in Menu and clear all camera settings, This will set camera back to factory settings. (It's under the Yellow wrench sub-menu mode)

With the increase in popularity of selfies on social media, many brands have build phones with quality front facing camera and more features designed especially for selfie lovers.
Most of the phones have a front camera or you can use your rear camera too for taking your own photograph, it's cool.
I suggest you to use a nice selfie app to get the best snap for your social media account.
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Find the best selfie apps for each platform, http://mysocialimage.co.uk/

Maybe you should not turn tha camera toward yourself? You know... cameraas have a front and a reverse.

Nokia lumia 520 doesn't have a front facing camera. Lumia selfie is used to take pictures with the back camera using voice or time delay

Point the camera at you and take a picture.

Sorry, meant to say you need to connect an external source (Video, Pc) then picture in picture will be available. You cant view tv channels via picture in picture