Starting a YouTube channel - Advise/Questions/Tips
This is too broad, but here are some tips.

If it is like this one 
                
             

you could start with a nice PowerPoint presentation... Nicer than that example.


  So what skills should I familiarize myself


There are three main categories.

1. Videos with significant production value.

Animation, photography, Illumination, music, voice, good quality, a script, storyboard, revisions...

Because of the big effort it represents, the scripting part (and its revisions) are of paramount importance.

Introduction, development, climax, conclusion.

2. Live recorded tutorials

As you remember to do things, with bloopers and fixed later with some annotation over the video.

3. Anything in between




  I don't have any experience in editing videos... videos that people can hopefully understand?


Simply make them suited to your target.

This is not related directly to editing video, it is related to your capacity to make your explanations understandable but mainly interesting. It is related to what draws attention to the intended audience.

We live in a competitive era. There are a lot of videos with good quality. Some rely on personal charisma, some on the production, some in the style, some on a ton of other things.

Define what is your "mojo". What is the thing you are going to do to differentiate and add value to your product?

Yes, some of that is given by the editing. The editing is meant to give you rhythm. Some parts are meant to give you unity, volume to the voice, volume to the music.

But any editing is not enough if your source material is not good. So...

Simply prepare a video like if you are preparing a good exposition to a live audience.