Ask HN: Advice on Amazon Associates Program

I am planning on making some videos of me working through the tutorials in a SBC developer kit as a project while I recover from surgery.

I think this could be of use to some people who find it easier to learn from videos rather than written tutorials.

I was wondering if it would be worthwhile applying to the Amazon Associate program and providing a link to the development kit's product pages in the video description.

Is it true that once approved You can link to any product being sold on Amazon and receive a commission?

Is it even worth going through the Amazon application process if I'm only planning on promoting a few items in what I would consider a small series of videos on a niche subject?

Are there better affiliate agregators for my application?

Thanks