Ok, so to understand more clearly. Do you mean the academic material people learn at a university? Or is it something more abstract? If the former the simple solution would to attend university. If the latter can you please explain exactly what it is? As far as some big club if you mean it is literal then I can assure you no such thing exists. If you mean it more in an abstract metaphorical sense, then can you please be more explicit on what you mean by it?