Anything you don't know and need a tutorial for?

I make tutorials for many electronics (windows 8, ipod, iphone, android etc.) but suddenly I've been out of ideas. Does anyone have a tutorial idea for me to make? Or anything they would want to know.

Programming Tutorial:

C++
Java
Objective-C
etc.

  • Song mixing and mastering (Software and tutorial) for beginner? I have recorded a song on Garageband on my iPhone using Peavey's Amp Kit Link and I can say that the recording quality is pretty decent. There's no background noise or anything of that sort. However, when I play all the tracks together they sound pretty aweful compared to commercial songs. Please point towards the right direction for me in terms of which mixing software should I be using, if there's any tutorial site for mixing the songs etc.
  • People that buy iphones don't know anything about technology did you know that? Like my friend just brought iphone and I asked him if it has 4g late he said what's that? Then I asked how fast is the processor like 1.2 dual people buy them because its more mainstream and because their friends have iPhones Samsung is way better based on specs and technology the iPhone 4s and 4 processors are very slow
  • How to make a makeup tutorial if I wear glasses? I wear glasses, and I do not have contacts or anyone else to put makeup on. I film with an iphone and do makeup at a vanity. Without glasses, I have 20/100 (if someone can see something from 100 ft away I have to be 20 ft away to see it) vision and am very nearsighted. How do I film a makeup tutorial.
  • Going to Germany for 13 days. Is there anything I need to know/do with my AT&T iPhone beforehand? This is my first time out of the country. I'm okay with just using Wi-Fi for iMessaging and social media posting while abroad from the United States. Is there a way to reject all calls and SMS messages so I won't be charged? Also, is it worth it to get a temporary international plan?