I think if you don’t have any foundation, I suggest you start with trademark law and see what kind of trademarks you can and cannot apply for. Then search the trademark application process online, then find a trademark and check it online with the Trademark Office to familiarize yourself with the Trademark Office website. In short, there is a lot to learn in this industry, and the best and fastest way to learn is to work in an agency and follow up on a few orders together.

I hope my suggestions are helpful to you.