You’re very welcome! To know everything I wish someone had told me when I first started, read the article I linked to below on promotion, and pay attention to the formatting in it (title, subtitle, photo, photo credits, section headings, signature at bottom, etc.). You can’t put too much in the signature section, but it’s good for promoting other stuff or asking people to sign up to receive email notifications for your posts, or whatever else you want there. Also, for stock images, I get mine from Pexels.com, but they have unsplash.com built into Medium. The formatting is important; people will expect that you’re very new here if you don’t use standard Medium formatting.
Here’s the article: