Changed Careers - Tips for a new developer advocate?

I am a former English teacher turned full-stack developer. I completed a coding bootcamp in May, and got my first job as a developer advocate a month later. I am expected to create technical content about our product that highlights the value of our software - which feels like a natural transition from teaching. However, I fear I am lacking the technical skills necessary to create effective/strong content.

I am working on building my skills as a developer, but it is difficult being the only developer on a marketing team. Does anyone have any tips? Should I consider getting a job as an engineer to grow my skills? Are their online courses I should take? Meetup groups to learn with peers?

Any feedback would be appreciated.