I dropped my iPhone 4S in water?

I was washing my hands and the sink had heaps of water in it, so I grabbed my iPhone to take a picture of it, and I dropped it in the sink. It was in for a good second, and as I grabbed it I dropped it in again but quickly got it out. I grabbed a towel and covered the whole iPhone with the towel. I shook it and some water came out the headphone jack. Now when I use it there's a fairly noticeable, slightly brighter spot on the bottom left part of the screen when I use it. I've already badly cracked the bottom right of the phone and screen, so I think the water must of gone through there. It's my birthday in about a week so I might get enough money to replace/ refurbish it. I can't tell my parents because they already think I'm irresponsible for cracking the screen. I know telling them is inevitable. Anyways, what I need to know is:

a) What's happened to my phone?
b) How much will it cost to fix?
and
c) How can I make sure my parents don't find out

BTW, the camera/ antenea/ mic/ speaker all work fine. I haven't charged it yet (It's on 47% now). And a while ago I dropped it and the screen when white with pink lines running through it, and I thought it was it for my phone but then it switched off and then I manually switched it back on and it was working fine. The next day it goes white/pink again and switches on then off. After everything I've done to it, I don't think I really deserve a phone. Also, I was playing with restrictions and turned Siri off, then I turned it back on, the next day (today) Siri doesn't work, it just goes Voice Control.

My iphone 4s got really hot?

Last night my actual phone and not just the charger got really hot to the touch. I've only had it for about a month and thats the first time its done it. I just turned it off and turned it back on in the morning and it was fine but it freaked me out. What's wrong with it?

Trying to update iPhone software, to 5.1.1?

I have the latest iTunes, and when I plug in my iPhone, and choose "check for updates" it comes up with a window for me to choose a file. Saying it has to be a.ipsw file. I have windows xp and hve an have iPhone software 4.3.

Jailbroken iphone stuck in recovery loop?

One of my friends at school jailbroke my iphone 3g a long time ago and it was cool until i went to update and restore it. Now its stuck in a endless recovery loop with a screen with a picture of a usb chord below the itunes symbol. I tried going into dfu mode that didn't work. And i'm panicking right now, please help!
ps: i'm know nothing about firmware, hardware or advanced stuff like that. So can you tell me how to fix it the easiest way possible.

02 Ripping me off, what can be done?

I wanted to up grade my blackberry for an iphone three months before my contracted was due to end the lady in the shop told me it'll be £60 to finish my contract. When i rang them to cancel it was actually £120 to pay so i went back up the shop to return my iphone and say i'll wait in till my contract ends because it was too much money. The assistant manager said he'd credit my account £100 so all i'll have to pay is £25. Well i'm out of my 14 day "change of mind period" that o2 offers and he still hasn't credited my account after many phone calls. So i'm paying two contracts.
Can any one tell me my right?

Is it possible to get bbm on iPhone 4 s?

Please help all my friends have blackberrys and bbm I have watched all the YouTube videos and none seem to work even though it did for others please help is there a cheer or something!

ONE BAR SIGNAL OR SEARCHING ON MY IPHONE 3GS IOS 4.1 AFTER AIRPLANE MODE?

ACTUALLY my iphone 3gs is unlocked but sometimes shows no service, searching and now after i did the airplane mode trick it shows one bar signal… I have turned crazy gooogling over the net to find solution but every thing i did just sucks… An easy and fast solution will be highly appreciable!