How to know if I can sing? - 1

My friends keep asking me to sing but I'm really scared that they might tease me. I use an app on my iphone called audio memos and I can't pick up on anything bad in my voice when I play my recording but the speaker sounds kind of fuzzy and I know it's the phone because I dropped it a few weeks ago in dirt and I can't get all the dirt out of the speaker. What can I do to know if I can sing or not? I'd rather know what I sound like before singing to someone else. Thank you for reading! All answers will be appreciated!

Is this book available to buy with my apple ID account?

So i want this book but i don't have a credit card to buy it with online and i can't find a free version of it
but i do have my apple id gift card that i can pay with using my apple ID
can i download it on my iPhone?

the book is called matt huston's get him back forever
and how?

How to unlock Iphone - factory restored?

I have an Iphone 3Gs that was unlocked to any network and jailbroken. I accidently updated it under settings and now it has returned to factory settings and won't accept my SIM card. I have no idea what the IPW is or anything like that, all i know is my phone is completeley useless to me now! It won't recognise my SIM and when i switch it on it just has a grey screen saying IPHONE.

Why is my Iphone 4s Not letting me update my apps on the app store?

So just about a week ago I went to go update my apps on my Iphone 4s and when I clicked on updates, it read ''Can't connect to I-tunes store please try again later. Now this is really annoying me since I can accesses safari and update everything perfectly fine on the Ipad 3 my family recently got but not on my Iphone. I have tried everything from logging in and back into my account, changing the information, rebooting and restarting my Iphone and changing the date, but nothing seems to work. Please can someone give me some advice or suggest anything to fix the issue (p.s my phone is about 3 months old and it makes me wanna through it away)

My iPhone 4s keeps rebooting?

I'll be randomly using it and it reboots itself.
it goes to dark grey screen then shuts off.
and then starts back up with the apple logo.
and i can use it for about 3 minutes until that happens again.
I've closed all the apps that were working in the background and it still happens.
its not jail broken either.

please give me some idea of something that may fix this or even just what the problem is.

How to copy songs on my iPhone to iTunes on my PC?

I have 490 songs from another computer that I want to move to another PC. I've tried doing: File<Transfer Purchases. But that's only downloaded 22 of the songs that I bought on the phone. I tried syncing and backing up to see if it would copy the songs, but only to find failed results. Please help. Music is nice.

Added (1). I have already Authorized the computer.