Just starting out  What are some good editing tools out there to spice up your videos?

Do you have a budget about it ? there are a lot of professional tools for editing such as Adobe Premier Pro and Sony Vegas Pro for videos. They are expensive and very professional softwares. But if you are creative you can create miracles with a very very simple amateur software. It's all about your vision

How do you change your default user name?
It keeps resetting in the DJI Go4 app.