It's a super easy skill to pick up! Easy to learn, hard to master, at least. There's practically infinite tutorials on all types of editing software on Youtube. I've been tinkering with editing software since I was 10 years old, started with Windows Movie Maker. It's pretty basic, but it does simple cuts and rendering just fine. Everything I do nowadays is in Sony Vegas which is much more complex, but you can do all your fancy effects like tracking and green-screens. I'd recommend just starting in movie maker if you're interested (It's free, also)!