Also worth noting for most readers: you get 95% of the fun (your own ASN visible in bgp.tools, learning BGP hands-on) by renting a cheap VPS from providers that offer BGP sessions on a /48 or even a /24 you lease monthly. Owning the /24 outright is mainly for the permanence. Isn’t permanence one of the major goals if you start that road at all? Cheap fun never lasts.