I've heard a lot about using Press Releases for SEO? Is doing this worthwhile? What exactly do you do? Where do you go? Sorry, the idea of using press releases for SEO is new to me.
Press releases have little no impact on SEO. The reason why people recommend using them is every time a website published a press release, assuming your URL is in the press releases, you could get a backlink from their site. What people forget is:
So do press releases because you want the press to be aware of something new and/or special on your website, not because you're trying to improve your website's SEO.
PRWeb is a good place to submit press releases. I've had clients do well with them.