1/ Download the firmware update from the Gopro site and up date your camera even if it's brand new , if you camera freezes or does something strange do it again , it will fix the problems. The Blacks were born with a bug.
2/ Set it to PAL watch this to learn how:-
3/ Stay away from Protune (play with that later) it's a memory eater plus you have to put all you colour back in post production (it is a Pro Tool)
All my blacks are set to 1080 x 50 fps that is a PAL setting , 60fps is NTSC , 24fps is NTSC , 25fps is PAL. (Don't have a NTSC fps for a PAL setting)
1080 x 50 is a pretty high setting for quality but thats what I use plus it gives silky smooth slomo if you want it in post production. If you just want to post videos on the web like DJ on this site 720 x 25 or 50 is fine , it's alot faster to download and edit. If you use 25 fps when you slow it down it won't be smooth. The smaller the frame rate the faster it loads and uses less space on your memory card and your computer.
Good Luck just keep playing with and film in good light for best results.