Multiple questions re iPhone iOS 7. Please help where you can.

Question

Hi,
I've had a Macbook and an iMac before, so am not unfamiliar with Apple products and the OS in general, however I have just got an iPhone 5C, and after years of mobile phone Android, have not found migrating to the iPhone half as straight-forward as I thought it would be, and have a NUMBER of questions.  I'm unclear on a number of items that I have attempted to search for, and figure out.
I'm sorry to post all these questions in one discussion! I possibly probably will ask them all individually, but for economy, and in case there's anybody who likes killing more than one bird with a stone, I thought I'd post them all here.
Please answer any that you can. Any help will be much appreciated.
1. App Store / iTunes Store - the Android Play Store houses everything in one, but on the iPhone you have the App Store for apps and games, and the iTunes store for everything else, right?
2. However, where do you search for podcasts?? I can't find podcasts as a category in the iTunes store?
3. And I can find Audiobooks as a category in the iTunes store, but where can I find ebooks? Or does this not exist? (It does on the android play store).
4. When you browse through the Featured apps, or Top Charts on the App Store, it presents the apps in a list format each in small/medium size with icons and a small amount of information displayed. HOWEVER, when you use the search function, it displays the app results full-screen. i.e. browsing through the results each app takes up the whole screen, and you swipe along to see the next app. If there are hundreds or more results, it makes it awful to browse through the results of the app search....
5. is there a way to change the display format of the search results? i.e. in list format and show multiple results on one page, scrolling along or down? I would really, really like to do this.
6. And can you filter the search results at all?? You don't seem to be able to filter the search results by category or price, or anything. Is this right?
I am finding app store pretty horrific to use, so any tips would be much appreciated.
Next questions (and bless your patience if you're still with me here),.....
7. Newsstand. So I can search for newspapers and magazines in newstand, and in the App Store, and then they will automatically be put in Newsstand? However, I downloaded BBC News, and a couple of other newspaper apps, and they are not in Newsstand?
...I can't move anything out of Newsstand onto my phone, i.e. The New York Times, and I can't move anything into Newsstand that's on my phone, i.e. the Guardian app? Is this right?! (I realise I'm giving away all my reading choices here). Surely this can't be right?
8. Notifications. If something is updated/downloaded et cetera, I get a little red circle at the top right of the app with a number in it telling me there's been some *activity* in that app and to go and check it out. That's fine. But I have a had one of these notification bubbles above my Newsstand app for days now, and I don't know what it refers to or how to make it go away. I've opened Newsstand, and I've opened every newspaper/magazine that I've brought into newsstand, and it hasn't disappeared. Is there any place or way to determine what the notification refers to? If I'm calling it a 'notification' in error, please forgive me and correct me . Short of deleting every magazine in my newsstand, I don't know how to get this red bubble gone. Please help bubble-free me.
9. MESSAGES. This has astounded me. There are no drafts whatsoever in iPhone time messages? So if you go to compose a new message, if for any reason you can't or don't want to complete the text message at the time, if you leave whatever you have written is gone?
10. If this is the case, is there an alternative text messaging application that I can use, that would allow this functionality? I'm not talking about whatsapp, which I have, or any kind of messaging platform that uses internet and requires the receiver to have the same app. Just straight text messaging that uses the text allowance given by your service provider. Is there an alternative to this, that allows drafts and the normal functionalities provided for text messages by other phones?
11. Is there a way to search sent messages alone?
12. Sometimes my text messages appear green, and sometimes they appear blue. Is there a reason for this? (This is a minor question, please feel free to pass over it if time is scarce)
Finally, and nearly there.
13. The push button at the bottom of the screen takes you out of apps, and if you push it twice it takes you to all open apps. Is there no way to actually close an open app when you exit it? Or if you want to actually close an app, any and every time, you have to push the iPhone home button once, then you have to push it twice, and then you have to swipe the app to close it. IS that right?
14. Or should I not be worried about multiple apps being open in the background? How much battery/resourches does it actually use?
15. I know that I can close multiple apps simultaneously, or at least three, by swiping three up at the same time. Is there any way to simply close all apps at the same time? Or any app I can download that will do this?
16. Airdrop. I have a Macbook pro that's less than a year old, and the iPhone 5c is brand new. I can't get Airdrop to work. I've put them both as discoverable to everybody or contacts only, I've turned the wifi on and off for both, bluetooth on and off for both, every different combination possible, and there's nothing. Nada. Guidance?
17. Specifically, if I can't get it to work, who do I go to? Can I take my macbook and iphone to an Apple store? Can I get customer support? I want to use the airdrop feature as I've figured I've paid for it, but I don't know who to access the support for doing so, or which would be the most effective.
Really and truly finally:
18. My bluetooth seems to be turning itself on all the time. Even when I've turned it off. Why oh why?
Thank you very much.

Answer 1

1. Yes. App sotre has Apps and Games. Itunes has everything else.
2. Podcasts are also found in the iTunes store. (The Podcast App only plays them, but is not a store)  You can search by title, and using the More button at the top filter by type. Select Podcast.
3. Ebooks can be found in the iBooks App. Its a separate App and store.
4, 5 and 6.unfortunately no, no and sadly no.
9.  Nope, Messages is treated like a chat as such no drafts.
10. There are many Apps in the store for SMS messaging. 
11. Spotlight search searches everything. You can go into Settings->General->Spotlight search and deactivate everything except messages to search for messages only.
12.Yes.  Green messages are standard SMS  messages. Blue messages are iMessages. Apple's messaging service.  If the user is not using an Apple device or is not registered with iMessage it will send an SMS. Otherwise it will use iMessage over the internet to save on SMS costs.
13. When you exit an App most will close. When you get to all open Apps swipe the App screen shot to close it manually. 
14. Most Apps in the Multitasking list aren't actually running. As such they don't use battery. Only Apps set to background tasks will continue to run via the Background App refresh setting.
16. Correct Airdrop at this point is only between iDevices.  or between Macs. You can't Airdrop between a Mac and an iDevice.
17. You can take your Phone to an Apple Store for support form the Genius bar if required. You also have 90 days phone support.
18. Airdrop uses Bluetooth. and you may have another App that needs it.
You may want to take a look at the manual for specifics:
http://manuals.info.apple.com/MANUALS/1000/MA1565/en_US/iphone_user_guide.pdf