I've been involved in one for about ten years. The first five were just fund raising and hunting for grants - we used to meet under a tree. We built a 20 x 10 shed, added a big kitchen, put in a mezzanine, then added another 15m, then a 40 foot container, then a big area for raised garden beds. We get 40 blokes most days we are open, with a membership of about 120 and most events are booked out (dinners, Xmas, boat cruises, visit to car museum etc). It is astoundingly successful. We try to get by with a minimum of rules. I used to joke that sheds were started by women with the main purpose of getting men together so a doctor could come and talk to us about prostates (yeah, that happens too). One of the best comments "women talk face to face, but men only talk shoulder to shoulder", referring to mens reluctance to discuss problems. We've had about 5 funerals, have taught lots of fellas how to cook, rebuilt a dragon boat for the breast cancer ladies, and its a very welcoming and social place to go.