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Does linking a blog to a website help SEO?

I am sure hoping someone can share their insight on this.  I read where having fresh content on a site is good for the SEO.  So if I added my blog link on my business webiste would that help?  I add content to taht weekly. Or would I need to add my blog as one of the site pages, like say page 5?  HELP!  I am new to this and really trying to leanr what I can. Thanks!