Affiliate Marketing Secrets

I have youtube channel. And every of my video has the following statement in the description:
This is for educational purposes ONLY. I am NOT registered/partnered/affiliated with any of the companies/products shown in this video. Try and support the developers.
I am in no way responsible for; anything caused to your computer, you getting in trouble and/or you resulting in any of several unforeseen consequences. Do this at your own risk. Thanks.
Can I put that statement under a Disclaimer heading? And what does disclaimer mean?
I have a channel where I upload tutorials on how to ‘download’ PC games… if you catch my drift…