Starting a new Strumfest Group
How hard it will be to build up a group depends very much on where you are, though starting an interest group nowadays has been made so much easier with the use of the Internet. I started with a Meetup group. This is a good option because Meetup advertises your new group to existing meetup members in your area. www.meetup.com A downside is that there is now no facility for sharing files via the website.
An alternative is www.downtomeet.com . There is a download file facility. It is still in the Beta phase of development and so is currently free.
A Facebook group will also allow you to reach a potentially large number of people in your area. Once you start doing Strumfests though the word spreads fairly quickly.