If in uk I would start my first meeting to meet up in a coffee shop/ pub, To chat and find out if interest enough to start looking for a venue. A venue costs money and you don't want to be out of pocket. From the initial chat you will find this out. Look for a venue with enough room fora specific number. You need electric, tables chairs drink making facilities and possible food store if staying all day. You may need to take extra mats and rulers and cutters. You also need the space to have good lights and washrooms. Hope this helps.