I made you a spec list for about $1000 - https://www.pcpartpicker.com/list/2WksxY
This will include everything you need for content creation for a good price. In terms of building you pc I will leave you a few links to some great guides that I have used and have found really good.
Also the motherboard and CPU supports overclocking so I will leave a guide to that too!
Build guide - https://youtu.be/0bUghCx9iso
Overclocking guide - https://youtu.be/CV-J2TU08Qk
I hope that helps!