Is it okay to start charging my iPhone 5 when it's at about half battery?

I used to have an iPod, and the battery got kind of messed up, it drained really slowly and charged really fast. But I just got an iPhone 5 and I don't want that to happen again, so I usually try and drain the battery until it shuts off. But sometimes I stay up really late trying to drain the battery so that I can charge it fully for the next day. But is it okay to start charging it at about half battery?

Multiple iDevices on one account?

Okay, so I've had my iPhone 4s for about a year now and my little brother just got an iPad mini for Christmas. I let him use my apple id for his iPad so he could have all the songs I have and all the paid apps I have too. This was good until he wanted to use his own iMessage account to text his friends because it would go through as my email account AND he started getting all my iMessage texts. Also, his iPad is taking storage away from my iCloud since they share the storage. So my question is how do I separate my iPhone and his iPad while still being able to share music and apps? I don't want my iMessages going to his iPad. I'm also getting ready to leave for college next year and I don't want to have to sync his iPad to my mac every time I come home.

Added (1). So in all, I don't want him to be dependent on me and my Mac when he eventually gets an iPhone, ect. Is he going to have to just create his own account and have to deal with buying apps and music all over again? Which is ridiculous if you ask me. Apple already makes enough money.

What happens if a package is delivered and no one is home?

I ordered an iPhone and verizon is shipping it to me. Both my parents work and no one will be at my house to sign for the package. If I leave a note on my door saying it's ok to leave the package on the porch will the delivery service leave it?

Why does my iPhone 5 say 3G? - 1

Bought the iPhone 5 about two weeks ago and somebody mentioned that my phone was running on 3G network… Isn't it supposed to be either 4G or LTE?

Some really good photography apps?

I need to find some FREE iPhone apps. I want really cool photography ones. Where you can put bubbles on photos and make a photo of yourself double so there's two of you. Just editing photo apps. Know any good ones?

How to make my IPhone 5 completely silent?

Okay so tomorrow i have school and it's the first time that I go to school with my new iPhone. I want to make it completely silent so no vibrations( my class is usually quiet so it would sound like an earthquake). I don't want to turn it off so please don't comment that.

Why won't jailbreakme work on my iPhone 4?

I tried going to jailbreakme.com on my iPhone and it don't work. Is there another way I can jailbreak without a computer?
If you have good advice, call or text 5134003792

YouTube won't play in background? IPhone 4?

I have an iPhone 4 and I can't get my YouTube to play in the background like when I hit the home button it turns off or when I lock it and press play it will play from my album from iTunes. I use the YouTube app. How can I get it to work?