If the title didn't already give it away...yes I am a noob... My question is if I think 99% of the content on my site is relevant, and my understanding of the robots.txt file is to keep bots out...do i even need it? TIA
Please see the following link for what robots.txt is : http://www.searchtools.com/robots/robots-txt.html
No, you don't need it. It's helpful to include one though because bots will look for one and you'll get errors in your logs when they can't find it. Just make a file in a text editor, paste these two lines into it: User-agent: * Disallow: and save this file as it as robots.txt. Then all you need to do is upload your robots.txt to your site's root directory (often called public_html) and you'll have a robots.txt file that allows bots to spider all of your site.