There are so many possibilities for audio (voice work) or video (face videos or powerpoint type videos) and you can get paid for your efforts too.
As I suggest elsewhere, try selling your work on Fiverr.com first. Learn from your clients there what people ask for, what they do or do not like... and then earn more once you understand audio and video work better!
I purchased Videomaker FX when I started to make videos and I still use it. It's easy, fun, and really versatile. You have lots of control OR you can use their templates and just fill in the blanks for the video you need. Learn this app, then sell your services locally or online.
Do you have something to share about this?