Saving a webpage for later use on iPhone 4S?

Lets say we need to check in on an airlines website for our boarding pass.
Instead of typing in the info at the last minute someone said to fill in the info then take a "screen shot" (which I know how to do) OR "history" so you can just go back to that webpage later. The info will still be there.
That's where I'm lost. My info is gone & I have to retype it. What am I doing wrong?
Any help is appreciated.

Why does my iPhone have no service?

I have an iPhone 4 which I haven't used for a while, I tried using a few different sim cards in it and it keeps searching for signal but then saying no service, it is updated to the latest software and I'm wondering if this can be fixed?

I'm leaving abroad soon, and I'd like some help buying a personal travel Wi-Fi router?

I want to be able to access the Internet on my iPhone 6 and laptop. I don't have the data to use to access my "personally hotspot" on my phone, so I need an adapter that I can carry with me. Since my phone is 4G, I've noticed some routers don't work for that. Does anyone know of any routers that are compact and work for the iPhone 6 (as well as other devices)? It is fine if it has to be plugged into my phone, I just want something that'll work.

Why won't my iPhone connect to my PC?

Why won't my iPhone connect to my PC?
I have a MacBook Pro that I connected my phone to. But I also have a PC that I want to connect my iPhone into, The problem is it won't connect to iTunes through the PC. The PC will make a ding sound indicating that it detects the iPhone being plugged in to the USB drive, but my phone will not show up on iTunes. This works for my dad's iPhone, and my iPad. But it asked differently with my phone. And it's been this way, since even before I connected my phone to my MacBook. Why won't it connect? What's wrong with my PC? What can I do?

How to set up my new iPhone on my Mac?

I've recently got my dads iPhone6 and gave my iPhone5 to mum. My old phone was always used on my Mac but now I have this new phone I don't know how to change it to think that's the main phone. Because my mum is using my iCloud accounts, like iTunes. I put in my new (dads accounts) iCloud details on my Mac but still doesn't wanna put music on my phone or that. I hope I explained my problem good enough, I hope someone could help please!

Can an ebay item come in the afternoon?

I bought new iphone from ebay and it said it was going to come today, normally they come in the morning can it still arrive today? It's really important for my school work

What's a good free music downloader that I can listen to my music offline?

Okay, I have looked EVERYWHERE for an app like this. I have a new iPhone and I can't find a simple app that lets me download music and then play it when I have no internet. All I need is an app where you can download songs or videos from YouTube or something on the Wi-Fi, but then when you're off Wi-Fi you can still listen to the music. All the apps I've tried don't work or I can't find them, please help