These links may help you:
https://steemit.com/steemit/@hitmeasap/what-is-high-quality-content-and-how-to-write-it-not-what-you-expect

https://steemit.com/steemit/@steemitguide/markdown-and-html-code-guide-for-beginners-that-includes-5-useful-tips-to-edit-posts-and-comments-using-the-raw-editor

https://steemit.com/steemit/@mindover/steemit-for-dummies-like-me-everything-you-need-know-to-get-started

The absolute BEST thing to do here is share knowledge.
Open up your mind to everyone around here, tell about experiences, decisions, or tell about your work or daily business.

Have fun on the platform!