It depends on what you want to do with a video editor. If you simply want to pull together photos and clips to make sharable content, you can learn all you need to know in a few minutes. You can download a video editor that will handhold you through high-level editing. However, if you want to get into the nuts and bolts of trimming and joining clips down to using a music mixer to make the soundtrack of your choice, the learning curve will be a little steeper. Gaining solid expertise on pro-level tools like Adobe Premiere Pro can take months.