If you're looking for a cheap laptop to begin with then something like this acer will do you well, as mentioned in the video, the more you want to add to your stream the more you'll want to upgrade your hardware. However starting out the best thing to do is keep it simple.

https://amzn.to/365bBtr

I'll assume you have a smartphone already but if you're looking for something not crazy expensive but will work to keep you running, with a solid camera, then the best thing to go with is a Xaomi.

https://amzn.to/3JgNhmH

A Cheap and Easy Example: https://amzn.to/34LyEZx

As mentioned in the video depending on your plan, you'll want a cavalier microphone or a condenser microphone to move forward. They don't need to be expensive though! Best to learn with crap equipment.

Lavalier

https://amzn.to/3HKf5zw

Condenser

https://amzn.to/3Lp4Wu6

A high end look with a green screen doesn't need to be expensive, you can find one here for just $12!

https://amzn.to/3oFlVPd

As Mentioned, you can use OBS

https://obsproject.com/es/download

If you want something easier to use but more gaming focused, then click below to get $9 off a paid plan:

https://streamlabs.com/goprime?promo=grandprick-981f-10

If you are ready to five in and get some professional work done, you'd be surprised how cost effective it is on Fiverr to get these backgrounds made. Check it out below!

https://go.fiverr.com/visit/?bta=335870&nci=9416

As mentioned, alternatively you can outsource this to Fiverr instead of doing it yourself.

https://go.fiverr.com/visit/?bta=335870&nci=9760