Skills worth learning to level up Webflow sites

Hello! I am a marketer running a solo agency and I have learned webflow in the last two months. I have developed two small sites, my clients are usually small and medium-sized companies that need a web presence, from which I can offer them my digital marketing services.
As Im not coming from the field of systems engineering, sometimes I don’t understand the scope of some issues. I want to feel 100% comfortable in webflow both in building sites from scratch and in using templates and creating dynamic sites. I thought using templates would be easy, however some are quite complex. Unfortunately I haven´t find in webflow courses to do that comfortably.

Could someone please suggest learning routes or areas of knowledge that are a must?
I really appreciate it, I want to grow as a professional but sometimes it’s hard to know the way.

Thank you very much!