Itunes won't download videos onto my iPhone 5s?

I have the latest version of IOS 8 and latest iTunes update. Whenver I go to download videos onto my 5s it won't download. I click "On my iPhone" when syncing and the videos have grey dotted circles around them. It says that it downloads all content onto my phone but when it finishes up downloading it hasn't even started downloading the videos. I've tried to uncheck the videos, sync, recheck, sync but that doesn't work. The songs and apps are fine - they sync properly but not my movies, tv shows, or home videos.

How to get iphone past Apple logo without computer?

My iPhone won't get passed Apple logo. I turned it off and it won't come back on except Apple logo. I have no computer (my computer is in the shop) How can I get it on! I have no car to get me to the Apple Store as well because it's far… So what can I do?

- Any GOOD advice?

16gb iPhone 6 or 32gb iPhone 6?

I will be downloading 3 heavy games
Amazing Spiderman 2, GTA SA, and MC4

And 4 social media apps
Vine, Instagram, Facebook, and Twitter
How much space would thid take up?
Is 16gb enough or should i go for 32gb?

Can I connect my iPhone with another carrier?

IPhone 5s in silver, 16gb, I bought it a few months ago, about a month before summer. I bought it at Boost Mobile for 600 bucks because my mom doesn't like contracts so she just bought it and we're not on a contract. I really want a contract with AT&T but since my mom really saved up for this phone to make me happy, I want to connect this phone. Is it possible for me to take my iPhone and get a contract with AT&T?

btw if I can do this, how much would a plan be for unlimited data.

How to unlock my iphone again (i went abroad)?

I live in the UK and i was on 3 network, my iPhone 5 is was unlocked as i got it from the Apple store. When i went to Turkey i used a different sim card to avoid the cost of data roaming and my iPhone got locked to it. Now every time i enter my 3 sim card it gives me "no service". I went to the 3 store the other day and explained my problem, one of the staff members said something about connecting it to iTunes and backing my iPhone up and then i should get it unlocked to use the 3 sim card again. I don't quiet remember what the procedure was can someone help me? As i hate being out of reach.

Can't delete songs downloaded off iCloud?

I have songs in my iTunes library that i have synced from my computer and songs that i have downloaded from my iCloud (these songs are not on my computer) when i swipe to delete the synced ones the red "delete' button shows up but it doesn't show up when i swipe the downloaded songs. How do i delete them?
I have the iPhone 5s with iOS 8

Added (1). when i went to setting>general>usage>manage storage and deleted all my songs all my synced songs were deleted but the iCloud songs were not.

How to put music from iTunes to the iPhone?

How to put music from iTunes to the iPhone?

Added (1). I reset my computer and in the process it deleted iTunes and all my music on it. My music is still on my phone but when i try to add music on it my music won't sync.