Best thing to do is look for any local group (online often) that is into old classic bikes, co-op, etc. Once you meet one or two "hoarders" you can start to work with them to build some longer term connections, then just a matter of time before you will have access to more projects than you want. From there it becomes experience on what is worth at buy in relative to outlays, overhaul, resale, collectible, etc.