How to connect your home internet to the Iphone 4?

I have the Iphone 4 and its confusing me. When I go to click on settings it won't let me click on Wi-Fi to connect it just says "no Wi-Fi". How can I connect my internet on my phone to my home wireless modem?

Also, when i click on settings > general > network > what does VPN stand for? Even beneath that it says no Wi-Fi: S
when I click bluetooth it never loads either
Someone please help me in this! Haha x

How to connect your home internet to the Iphone 4? - 1

I have the Iphone 4 and its confusing me. When I go to click on settings it won't let me click on Wi-Fi to connect it just says "no Wi-Fi". How can I connect my internet on my phone to my home wireless modem?

Also, when i click on settings > general > network > what does VPN stand for? Even beneath that it says no Wi-Fi: S
when I click bluetooth it never loads either
Someone please help me in this! Haha x

Added (1). There's no slide to turn anything on, it simply won't let me click on Wi-Fi

Understand the meaning of complex sentences in English?

I'm having trouble understanding the meaning of the English sentence. It seems difficult to me. I have a paragraph as follows:
"If T-Mobile manages to slow, stop, or reverse customer migration, it would signal increased competition in the wireless service segment. So far, T-Mobile's competitors have continually benefited from the carrier's struggles, adding those customers that T-Mobile regularly shed. The addition of the iPhone, though, as well as novel mobile plan pricing structures, have given the fourth-largest carrier a somewhat better chance to compete against its much larger competitors. "

What is the meaning of the phrase "as well as novel mobile plan pricing structures" is describing? I have tried many times but translates them do not seem to achieve anything. I hope to get an explanation of the native English speakers. I sincerely thank you.

Complex English sentences?

I'm learning English and I was having some difficulty in understanding the meaning of complex sentences in English. I quote a paragraph as follows:
"A new study out from Consumer Intelligence Research Partners estimates that between 300, 000 and 400, 000 total customers who would have otherwise left wound up staying with T-Mobile in the wake of the iPhone's launch on that carrier. According to The Wall Street Journal, CIRP's estimate is based on a survey of 500 phone activations occurring between April and June, with about 75 of those phone activations being on T-Mobile."

I do not understand the phrase "left would have otherwise wound up staying with T-Mobile in the wake of the iPhone's launch on Furniture carrier" is talking about. This structure is very complicated for me. I hope to get an explanation of the native English speakers. I sincerely thank you.

IPhone 4 16gb connect to iTunes?

I have a 16gb iPhone 4.It's in restore mode and doesn't connect to iTunes on my computer. I have tried dfu mode and everything but no luck. The thing is when I disconnect it from the power lead the iPhone switches off and doesn't come back on unless I insert the lead into it

How to change my IMEI number?

BEFORE ANSWERING, READ.
I have an iPhone 5 that's locked to O2 and I have a factory unlocked Samsung Galaxy Ace 2.
For what I know, the IMEI determines it being locked or unlocked carrier-wise. I'd like to change my iPhone's IMEI for my Ace 2's IMEI, only to have it factory unlock. I'm going on holidays and I need a SIM from the country I'm going to but since my iPhone is locked I wouldn't be able to put one in, so I want to change the IMEI so that I can. After that, I'll be back to the original SIM card and carrier.
I'm aware that changing an IMEI is illegal but what I'm planning on doing is swapping IMEI, both being my OWN private phones, aka private property.
No, I'm not able to use my Samsung because it has been through it's due life experiences and is now quite broken. I can still read the IMEI luckily, not the rest of the screen though.
That all said, how can I change the IMEI on my iPhone 5?

Added (1). Yes, Lara, you can. There are programs for it. What I'm asking for is HOW to do so.

What should I do with my babysitting money?

As a result of a year of babysitting, I have 400 pounds saved up (approximately 580 dollars). Half of it will go into the bank, but I want to spend the other half. My two options are an iPhone 4S and a VIP Taylor Swift concert ticket. The iPhone would be useful because currently I have a blackberry which doesn't work properly, and I feel left out because everyone at my school has one. But I've been a Taylor fan since 2008, her music helps me a LOT, and to see her perform and meet her would be an unforgettable opportunity.
Basically do I pick a physical item or an experience? Which would I appreciate more do you think? Please give as detailed answers as possible because this is a lot of money that I'm about to spend.