Trade secrets are not necessary to build up interest/visibility momentum. And likely "wasted" for external rewards, without pre-existing momentum.

(External = a marketing/sales bump. vs. Internal = enjoy sharing, writing to self-clarify, writing practice.)

Developing the abilities to repeatedly pick attractive topics (not as widely known as they are useful/interesting), and communicating (in a clear well-received voice/style), until those are validated by increasing visibility and sales/marketing impact, is where to start.

After that, the choice to share a trade secret can be made based on a more predictable reward trade off.

But every post already made, is a post to build on.