There are tons of sites out there about scales, riffs, tabs and electric guitar, but almost nothing about how to strum the guitar. I found this site and thought it might be useful here for us acoustic guitar fans.

It’s called http://www.Strumpatterns.com. There’s tips for beginners on strumming and holding the guitar as well as a huge series on understanding rhythm. It’s all free and there’s a ton of strum patterns to try out.

Hope that helps!