Starting up a business on fixing Apple products. Good idea?

I'm only 14 but don't worry it is legal and i'm quite muture, good with business and great with technology. I want to start up a business to fix peoples apple products. I have bought all the tools and screens and i have a supply of other apple bit like cameras and microphones etc. I have also had training so i know what i'm doing and i have built robots and i'm getting my bronze crest award.
I'm charging £30 for a simple screen replacment on an ipod or iphone and my other proces need to be sorted but it is much cheeper than ither companies and getting your product replaced by apple.
What i'm wondering is…
1. How can i advertise this?
2. Can my ICT teacher help me out with a website ir help me advertise in school (every student has an ipad)
3. How should it work? (How would i get the products and send them back but make sure they pay?)
4. Would you trust someone like me to fix your apple product?

I have updated my jailbroken iphone3gs 4.2.1 to 6.1.3?

Help! I have updated my iphone3gs to 6.1.3?
it was 4.2.1 jailbroken… N after d update it asked me the language on the phone and the country then it showed that the cable is connected to iphone… Now on itunes its giving a disgusting message that its unable to connect TRY AGAIN! WHAT CAN I DO TO SAVE MY PHONE FROM THIS DISASTER! Please help please help

Added (1). I'm UNABLE TO OPEN MY IPHONE AT All TO DO THE RESET AND ITS NOT GETTING CONNECTED TO THE IPHONE EITHER

Good way to download YouTube videos on iPhone 3g 3.1.3?

It's jailbroken. Tried MxTube and it's full of bugs. And most any website says it needs Java (which makes NO SENSE whatsoever because Java works fine, and/or size limits.) And because obviously I have so spell everything out for people, I need it to be FREE. Anything that requires a PC is out of the question.

How to do split screen in windows movie maker?

I've got the new windows movie maker and I want to make some YouTube videos. I was wondering how to do like a split screen thing.Eg. I will film me on my iPhone and my tv on my ipad if I was playing a game or something. How would I get the video to be split screen like a lot of KSIOLAJIDEBT videos.

Where can I watch invader zim on my iPhone?

I recently found the show after not seeing it for years and would like to watch all the episodes, however I only have my phone and ps3.
Does anyone have links to stream them that works on either of my devices?

Added (1). They only have season one on Netflix, I've watched them all.

How much trade-in value for my iPhone 5?

I'm going to trade in my iPhone 5 because I'm looking to purchase the S4. This question is for anyone who knows what the average trade in value is for an iPhone 5 16GB (works perfectly fine). Some minor cosmetic blemishes

The carrier is AT&T

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I've been seeing this since I moved in to an old house when I was 15. I told my parents and they took me to a doctor saying that their recent divorce was causing the problem. I was put on some medicine to help with the problem but it never helped. The dark man only showed up in my room at night or when the lights were dark so I'd just leave the lights on all the time. When I moved out of the house when I was 17 with my dad all was good until about 3 weeks into living there I woke up and couldn't speak/scream and the thing was standing over me and its the 1st time he spoke to me he said" you think leaving can get you away from me I've always been here" it was exactly like that Nor was it perfect English that's what I understood of it. The next night my lamp was knocked off and the lights when out I couldn't see anything so I reached for my phone buy my hand was grabbed and pinned back I felt my stomach start to burn then I finally was able to get the flashlight on my iPhone opened and I was the black figure heard a laugh then it kinda slithered down and went under the bed. I waited until I could ketch my breath and the heaviness in the air disappeared and I ran into the living room. What can I do?

Added (1). I've done that. I no longer feel that's what it is. My dad heard the laugh

Headphones and iPhone! (skipping)?

I have some NEW n-credible headphones from walmart. I also have an iPhone 4. This has never happened to me this whole time I've had my phone since i got it for Xmas. When I'm on a bumpy road with my headphones in, the music will skip and pause. I DON'T have shake to shuffle on. And also it only happens every other time i hit a bump. Why is this? Is this the headphones or the phone? I can't tell because when I'm not in a car or bus where things are bumping around i don't have problems.