There was a lot for investors to digest in GoPro's (NASDAQ: GPRO) first-quarter earnings report, released after the market closed Thursday. Revenue was up 19% to $218.6 million and its non-GAAP net loss declined 28% to $62.8 million, or $0.44 per share, both of which were better than analysts' consensus expectations.But within the report, there were some factors that I think investors need to keep an eye on for the long term.