From another post on video editing, I saw Hitfilm Express 4 mentioned.  It's free with all you need to edit and save or upload videos.  They make money by selling add-on capabilities to the app.  You can see a two minute clip I hastily put together...trimmed five clips and added transitions.  I think it meets an entry level need.  There's a lot more there I need to explore like adding music, titles, etc.

There are also several informational YouTube videos.

Yeah, I was using HitFilm Express before I stepped up to Premiere Pro.  Personally I think HitFilm was a bit fiddly for making vlog/youtube type videos.  Davinci Resolve felt a bit more intuitive to me but it kept crashing on my machine.  

I would recommend you make a color correction preset that you can drag and drop onto multiple clips in your timeline.  It makes basic color grading/correction for spark footage a lot easier.

Check out Shiny Films on youtube for HitFilm Express tutorials.  

Resolve kept crashing on my PC, too.  Yes, the last clip had some definite color changes.

Thanks for the tip

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nice results. great facility they have there - if i was your Spark i don't think i'd have wanted to get in the air there, though - scared shotless!!