Replying to Gopro Hero 3 White

*I searched this and I couldn't find anything that directly helped me*

About a year ago I bought a gopro hero 3 white mainly because I didn't know anything and it was cheaper but I'm interested in making a few edits and the quality of the video from my gopro is a little disappointing. One of my questions is can I learn how to edit the footage to make it look somewhat decent or do I really need to buy a new one? My last question that I can remember is what would be one of the best (is the word resolution?)settings? Sorry if this seems stupid I just don't know anything about cameras.