What did i do wrong with my music on my iphone?

Okay so I usually use my cousins laptop to put new music onto my iPhone 4.It's usually worked without a problem but this last time I put new music onto it something happened. My playlists disappeared and when I scrolled through my songs some of them were a faded gray and now I can't play them or swipe them to delete the song. What did I do wrong or what happened at least?

Will iPhone alarm still go off?

I want listen to iphone as i go to sleep but i also need it as an alarm to wake up in the morning. I know that the earbuds will probably fall out of my ears so i want to know if the alarm will still go off through the speaker of the iphone itself instead of just through the headphones?

Added (1). Good thing school is almost over ill only need to use this two more times.

An auto correct for the computer?

Is there such a thing? I already have it where it underlines misspelled words in red. But is there anything I can download similar to the iPhone's auto correct in where it automatically spells the misspelled word correctly? So i don't need to right click the underlined word. It just fixes it.

How to make sure that iPhone 5 pictures are saved?

I have just switched from always using droids to an iPhone 5. I'm planning on using my iPhone as my primary camera during my 2 month trip this summer. I tend to take way to many pictures and have averaged over 5000 pictures on all of my past trips (all of which were shorter and I used an actual digital camera for).

I'm worried about space limitations as I already am using 2 gigabytes of space for the less than 200 pictures I took in the three weeks I have had the camera.

If the pictures are in the photo stream are they saved forever? I'm unsure how often I will have Wi-Fi to check my iCloud for pictures.

Any help in suggestions as to how to use my iPhone to take 1000s of photos and make sure all are saved and safe would be much appreciated.

My iPhone won't connect to Wi-Fi with no apparent reason, how can I fix this?

My iPhone is on a 3G plan and I don't want to use up all of my data, I don't use data in a Wi-Fi zone and my home Wi-Fi won't let me connect for some odd reason. No one changed the password and no one in my house has messed with it in any way. Whenever I go to my settings, I tap "Wi-Fi" and the I tap on my home's Wi-Fi, but it just says, unable to connect, everytime I do so.