Promoting New Posts - Tips?

If you want to research the topic, what you should look for is "content distribution" strategies.

Here are a few that I use:
After you publish, share your content on social media and relevant forums (make sure you follow each forum's rules).
If you have quoted other authors in your piece, contact them and let them know that you've mentioned them in the article.
Consider using a service such as QuuuPromote (this one costs $)
If the topic is appropriate, publish on free distribution channels such as Growth Hackers
After the content has been live on your website for a few weeks, syndicate it by republishing on Medium or LinkedIn

This article (and the gated checklist) will give you some other ideas to try:
https://contentmavericks.com/content-distribution/strategy/