IPhone won't turn on at all?

I've tried holding down the two buttons, charging it, using the computer, etc. I don't live by an apple store. Is there anything else that I can do to fix it?

I can't figure out how to download a movie

When I try to rent a movie from iTunes on my iPhone 4s a sign pops up that says "not enough available local storage to download. You can manage your local device storage in settings" but I still can't figure out how to fix it. Does anyone know how what I can do to fix it?

What happened to my iPhone update?

So I have the iPhone 4 and yeah it's pretty old and I had never updated it before so today I decided that it's about time I do. So I plugged it into my computer and it asked me if i wanted to download and update the software so i clicked yes and it took like 4 hours to do so I sat here waiting for it, and then it said something like 'everything on iPhone could not be backed up, do you wish to continue?' so i went ahead and said yes. But then after another 10 minutes it said something like 'an error has occurred, back up failed' and then nothing happened so i switched off my phone then switched it back on and it just asked me if i want to update the new software so i clicked yes and its backing up my iphone at the moment. Will the same thing that happened the first time happen again? Why did it happen?

IPhone sounds play from ear speaker, not bottom speaker?

Every so often, when I double click the home button, scroll over to the volume level, there's a little symbol for air play. When selected, I can play sounds from either the I phones ear speaker or the bottom (louder) speaker. However, this seems to go in and out and most of the time the air play icon isn't there. How do I fix this?

How to fix Iphone? Black screen with a white spinning circle?

Ok, so right now, my Iphone is being a real pain. So it's got a black screen with like a white "timer circle" that keeps spinning over and over again and it hasn't stopped doing this for like the past 4 hours. I've tried holding down those two buttons at the same time that people say to hold down--but nothing--the circle just keeps spinning. So I just want to know--how would you be able to fix this problem without having to hold down those 2 buttons at the same time?

My iTunes Library isn't transfering songs correctly?

I'm trying to transfer the songs on my ipod to a blank itunes library so I can then transfer all my song to my new iphone. But when I downloaded itunes to my desktop, installed it and synced my ipod, it only transfered about 100 of my songs from the ipod to the library. I have about 700+ songs on my ipod. I can't get the rest of the songs to transfer! I've authorized and deauthorized the computer. This is the third computer i've authorized. The other two comuputers i've used previously for the ipod, i no longer have. What do I do? I really will be angry if I lose $600+ worth of songs.