What can I improve on?(singing)?

I really want to improve on my singing and by that I mean making youtube videos and having the right.presence. I don't want to seem nervous on camera and I really have to get better equipment to film and record myself on. I recorded this video on my iPhone and added the audio soundtrack separately.

You'll notice two things immediately the UGLY black bars on the sides of the video and how I come in off-tune on the "What would I do". I didn't play music in the background at all while I was filming this video because I didn't want it to sound like an ugly echo. I think that really messed up my timing. What kind of things can you do to solve this problem. I'm trying be more professional. All in all I just need tips on pretty much everything. Including vocals because I know I'm not the best that and that there's ALWAYS room for improvement any help at all is good!

Including critical feedback.

Added (1). @T I think I naturally sing with a lot of vibrato but, that is something I can definitely work on!

Google Voice Navigation on Iphone 5?

Can we use Google Voice Navigation(& Google Maps) on Iphone 5?
Or Is the apple's inbuilt Map and Navigation good enough for India?
Currently i'm using an android phone, which uses Google Navigation & i find it very easy and reliable most of the times, for my usage. It can guide, even through rural areas in India(mostly), and hence i depend on it many times.

My computer won't recognize any kind of apple device?

It will recognize the nanos only but ipod touch any generation iphone 4 iphone 4s 5 whatever it is it won't recognize it only as a camera but itunes just doesn't want to i have a hp compaw 64x windows 7 presario cq56

How to download music on to your iphone?

Ok so people who are opposed to this need to know that I iTunes doesn't have remix type songs so I can't get them on my phone. So
does anyone know any apps that you can download the music from like youtube into you iTunes library on your phone though.
my iTunes on the computer is not working and never has let my transfer any kind of music on to my phone.

How to fix bricked iPhone 3GS with broken home button?

My iPhone 3GS is bricked where the it would not turn on, connect to my computer or detect on itunes or even charge. It just shows the Apple logo then shuts off when charging. I can't get it to DFU mode since the home button is broken, so I need to know how to get it to boot up again.

Someone broke into my house?

They took my iPad, phone, brand new laptop BAG, and external HD.

I know all the specs of the EHD and iPad (Find my iPhone wasn't on), but I don't think that will help.
I don't have a back-up because THAT was the back-up. Thank God my laptop was with me. But I still feel really, really bad that I can't even concentrate on the stuff I'm supposed to be doing. This only happened yesterday. That exeternal HD had EVERYTHING in it. Some I still have with me, but some of the stuff in it I have never uploaded anywhere. That's 4 years of lecture, and photos, and movies, and songs, and videos etc. Special occasions.

I know I need a back-up for my back-up for my back-up.

I know I have little to no chance to get them back but how do I get over this?
I'm just so upset. I feel so bad.

Added (1). Parbat: We've done that. We can't trust them though. They usually just sit around and do nothing.