Most computers now days come with Windows movie maker.
1,000,000 question. Is it free?Download the GoPro studio. It's easy to use.
Same here. Make sure you turn off your Bluetooth (little blue flashing light) that will KILL your battery. Even with your camera off you have to turn off the bluetooth also or it will stay on trying to connect to a Wi-Fi signal until your battery diesI have that app on my phone (android) too. Just beware that it is a battery killer, at least on android. I use it to set up my camera (viewing angle) then turn it off otherwise it kills my phone.
One way to do it is to toggle with settings and lower the quality. Ive used power director editing software and it allows u to compress the file size for uploading to YouTubeHave ya'll found a way to reduce the file size. Even on a 1-2 minute video the file size is usually pretty large and can be difficult to e-mail.