My Gopro also had me very frustrated, did not work worth #$#@ until the updates. Could not get the update with the crappy old PC I had, had to wait 6 months while I saved for a super fast iMac. Once all the updates were installed it has worked flawlessly. Discover more about it every time I use it. Loads and loads of video tutorials on youtube to help. Get the free Cineform Studio editing suite from Gopros website…its helps.
The LCD Backpac and Battery Bacpac are well worth getting as is the 'Wasabi' wall charger, it comes with 2 batteries(otherwise you can only charge a battery while it is in the camera. Another neat thing that has come out made by Gopro is a charger that allows you to film while it is charging, local tomelapse filming just got better as a result.
There are other cameras on the market, but with Protune/Raw, Cinema 4K(doubt i'll ever use this anytime soon) it is pretty maxed out for a starter camera.