How to get two different itunes on one computer?

I have an iPhone synced up to my computer but I also have a iPod which has more space that I want to start using too. How can I hook up both and have all my music on my iPod and only have some music on my iPhone?

My iPhone 5 is stuck in recovery mode after downloading something from Cydia?

I downloadedsomething from Cydia, and it must have been bad because when i pressed restard springboard it got stuck at the apple logo.
So, I tried completely recovering my phone in iTunes and didn't work, then I tried using the umbrella program, that didn't work either. Also, when I plug it in my computer it will vibrate every 5 seconds or so. It's turning on now, but it keeps getting stuck booting up.
So, is my phone pretty much broken now? Should I just get a knew one? It was something in Cydia that I downloaded to make this happen. Anything I can do to delte that? I also never had my phone backed up.

Can't connect to iTunes Store?

I'm trying to get a free app on my iPhone, but every time I hit install it says can't connect to iTunes Store and it doesn't give me a reason as to why. So why is it doing this?

Sprint IPhone 4S to be used with Net10?

I just bought a iPhone 4S on eBay and I want to unlock it and activate it with Net10 for unlimited everything for $50 instead of $100+ like other major carriers. My iPhone has a micro SIM card slot, but its actually still on a sprint carrier (Sprint 14.0) when I check the system info. I found a special GPP SIM card that I use along with a program to unlock my CDMA iPhone into a GSM phone. Once I unlock it I can activate it with any carrier right? And in this case it will be with Net10 and I'll have to buy a net10 micro sim after I unlock my phone. So my question is, is that how I unlock my Sprint IPhone 4S to be used with Net10?

My purchased app won't sync onto my iPhone from iTunes?

I have an iPhone 4 with the version 6.1.3 and I bought an app called modern combat 4 so I played it and finished the campaign so I deleted but I want it back and it keeps giving me the error on iTunes that the app was not installed because an unknown error occurred 0xe8000004 and I've been to numerous websites and have tried just about anything I even restored but it still won't sync onto my iPhone I've deauthorized it and authorized it I've dragged it into my iPhone etc I need help I've been trying to sync it for a few days now I even talked to apple support and they couldn't figure it out

IPhone will not connect to my computer?

So last week I flew down to Texas to visit my sister and nieces, and while there I ended up needing a passcode for my phone to lock my niece out of it since she's always nagging for it. However, after a little while I changed the passcode and when I came back to my phone later, I forgot the passcode. So I ended up being locked out of it and had to take it to Apple where they had to reset it to factory settings, everything was deleted. While there the only way I charged my phone was from a wall outlet, never with a computer.
Since returning from Texas, I went to get some of my music back onto my phone when I realized that it wasn't connecting to my computer, I moved the cable to different USB ports and everything, I even switched out the cord; it still wouldn't connect. I also noticed just today that a message is constantly popping up asking me for my voice mail passcode, which I don't even recall having a passcode for that. This message never started popping up though until today, two days after returning from Texas and probably five days after it being reset.
I don't even know if any of this has to do with the issue itself, but I just wanted to include the details just in case.

No Wi-Fi signal but Internet working-iphone 5?

Since last week my iphone 5 shows no Wi-Fi signal even though I have Wi-Fi connected and its working… Any issues? Also the call button hanged two times today… And my phone also hanged two days ago for a short while… My iphone is in good condition, never dropped or anything. Is there any hardware problem?