SEO tips - free articles/blog posts

From what I understand about SEO (very little), it is all about content optimization. Would displaying a free article/blog section be beneficial?

I have a digital product that is free that actually includes a series of blogs, but it is behind a free membership wall.

Would making a few articles public on the home page be beneficial?

If anyone has some time, I would greatly appreciate you taking a look at the site and offering optimization tips. (will pm you the link)

Thanks!