It's highly unlikely you want to run your own BGP presence on the internet. If you just want to play with anycast services locally to get a feel or testing in before deploying it on someone else's reliable and secured routing infrastructure and worldwide presence then rather than going through the trouble of getting an ASN and peering with the actual internet you can just use a few linux VMs locally and something simple like OSPF (or even static routes depending how you simulate the failures). Or even the same guide without bothering to peer with the internet (if you can trust the packets don't care the address is actually publicly reachable).

OTOH if you do actually want to run your own anycast netowrk on the public internet I recommend reading a lot more than the manual on quagga or BIRD, particularly some resources like "Protecting the Integrity of Internet Routing: Border Gateway Protocol (BGP) Route Origin Validation". It's a bit like an email server, easy to set up but hard to set up properly.