technology What recording device to use?

[Antidaeophobia 299]

I'm looking to start doing few art art tutorials on my PC, however I'm a bit dense on what program I should use to record my desktop. I need a free software, that is easy to use, easy to edit, and doesn't take up a shit ton of space.
I tried Bandicam, and whenever it recorded, it completely trashed the colour and made it very fuzzy. My goal is to make my videos at least watchable enough that someone can understand what I'm trying to teach them without them getting fed up with the video. I'm not so into this project so much that I want to buy software since I'll only need to make a few videos. 

Some helpful advice on software and etc would be helpful.   
Thank you!

[N.W. 3,619]

I'd suggest looking into Open Broadcaster Software, I use it for streaming games, but it can also be configured to record video. I will say that the audio quality is very average.

The overall file size is not that large either, but again the overall quality is not great, but not terrible. 

[Green Precision 421]

"Open Broadcast Software" (OBS) allows for a lot of control over your recordings

[EddG 554]

Xsplit is pretty good ^^

The quality is pretty good ^^