How to put music from pc to iphone?

So I've had my IPhone5c for a while so I HAVE ALREADY SYNCED MUSIC FROM MY PC WHEN I DOWNLOADED ITUNES.

I'm asking how to put NEW music from my COMPUTER pc onto my phone.

I already have Itunes.
I have already synced it the first time I EVER DOWNLOADED ITUNES.

I'm not sure what it means by "Are you sure you want to remove all music, etc from this iphone and sync to this itune library."

Please help, I'd love to put my new music I downloaded onto my phone.

Ps I hate apple products.

Which color display is accurate? IPhone or laptop?

When I edit photos using Photoshop on my laptop, they seem fine when I upload them to websites like Tumblr. However, when I look them up on my phone, the colors display a higher saturation. It's enough of a difference to make the photo seem jarring. I tried calibrating my laptop, but there's still a fairly significant difference. If anyone can tell me which one is more accurate that would be awesome. It would also be helpful if someone could take a look at the photo (link: http://jenrihames.tumblr.com/post/71885725664) and tell me if it's too saturated or whatnot.

Much appreciated, thanks!

What is a good idea for a iphone app?

I own a huge instagram page and i sponsor apps for shoutouts which in return gains them popularity. I make a lot of money doing this but now i want to make my own app. I need some good ideas that would become a popular app. I can spread it out on my page so getting it out there and sponsored is easy, i just need some good ideas on what you guys think could become very popular. I'm giving 10 points to the best ideas.

How to transfer contacts from non smartphone to iPhone 4s? Different carrier?

I'm leaving Verizon for AT&T. I've got a Samsung Intensity II with Verizon, and my new phone is an iPhone 4s. Normally I transfer contacts using bluetooth but they won't pair. Says it's "unsupported." I can't use Verizon's Backup Assistant due to a glitch with the Samsung being pre-owned. I can't use the iCloud because a Samsung Intensity just can't do anything that fancy. Any low-tech ideas? Can AT&T do it if it's not an AT&T phone?

If we could refrain from giving our opinions about my choices and stick to answering my question I'd appreciate it.

Texting: Blackberry vs iPhone?

I'm getting a new phone one way or the other and I need your help.

My first real smartphone was a Palm Treo. Wow! Each key was a perfect uniformed bubble that one could easily memorize its location. Blind texting was a snap. Then my phone was stolen and Palm was no more. So I went Blackberry.
But wait a sec, these keys were slanted, not as user friendly as the Palms. Plus, the BB Curve was narrower bringing the keys closer together creating more errors. Ok, the bigger BB Bold lowered my error margin but the 3G phone's tech had to go when 4G LTE was paramount for my needs.
Next, I was given an iPhone 4s just to try out even though it too was 3G. It took a lot of texting to stop cussing at the virtual keyboard. But I got rid of it shortly because I could not live with the iPhone's battery issues.
So now I have a 4G budget Android phone. Though it lasts 2 days on a charge, its stubborn default settings are not user friendly. Way to many steps to get around on this phone that it badly has me missing my BB Curve.
So I'm getting a new phone one way or the other and I need your help. I want to know if anyone has had both the iPhone 5 and the Blackberry Q10 and which is the phone you kept and why? My belief is that if I can get good on the iPhone's virtual keyboard, then I'd be better off with that phone. But that's my question. Will the iPhones virtual keyboard always pale next to the Blackberry's tactile physical keyboard?

How to set up iphone 4s with out itunes?

Ok i'm getting an iphone 4s soon i don't have an itunes account so i'm wondering how can i set it up without itunes. And don't bash me because i don't have the newer iphone i want what i want and honestly the newer iphones are ugly! All that matters its an iphone! So no rude and ignorant comments on why i'm not getting the newer one because unless your paying for it why do you care? Any who just answer my question.

Found lost iphone what do i do?

So i a couple of days ago i found a lost iphone, i took it in hopes of trying to locate its owner, the phone is a 4s, at least an ios7, not sure what version of it, i don't know the cell provider of the phone, the service had been shut off, it has a pass code on, at the time i found it there was a name in recent missed calls, i looked them up however i could not find them, i tired to find away to locate who owns the phone but i was rendered virtually helpless being that the phone was locked with no service, today the phone said it was had been disabled, what do i do with it?

Itunes won't import library?

Just got a macbook pro, and I'm setting up iTunes but it will not sync my music… So i went onto File>Devices>Sync from iPhone so that it would import the stuff from my iPhone onto the mac. The problem is that i don't have all the stuff on my iPhone that i would like on my mac, for example, my movies since it would take up too much space on my iPhone. How can i retrieve all the movies i've bought onto my iTunes?

My iphone wil not connect to the computer?

I have an iPhone 4, and I'm trying to connect it to my computer to reset it, due to an Envasi0n jailbreaking Apple Logo Loop that it is stuck in.So, after research, I know that I must connect to iTunes to reset my phone. The problem is, my computer nor my phone recognizes that they are plugged in, but when I use my brothers iPod in the same port, both the computer and iPod do recognize each other.
Any suggestions for how to get my computer to recognize my phone?
Or in general, how to get rid of the jailbreak?

Thanks guys, I really appreciate your time to answer this question!