Blogging, Email Newsletters and Facebook Questions (continued)

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I saw this post about Blogging, Email Newsletters and Facebook Questions on here from 2013 but could use some assistance. Wondering what has changed since 2013. We are a non-profit that is trying to simplify communication to seniors. We are looking at Constant Contact to do a newsletter but I am unsure how this ties into concrete 5 except to use the HTML block and paste a code snip from Constant Contact. I know HTML but not considered a pro. Is there a way to setup the site so that you only have to, for example, write a blog on the website and have it automatically send to users emails and to facebook?