This is great, I have been learning "bird" and finding information on the web about using bird is very challenging since adding bird to any search doesn't necessary make the results better. If this project can maintain and keep their documentation clear, I would totally consider switching to this instead.
Yeah... Bird configurations are a little rough to learn. The examples they have on the website are pretty lacking. Their mailing list is usually helpful though.
Quagga is usually easier to find examples for since it's modeled after Cisco switch syntax for configuration (same basic syntax of arista switches).
Both of these really suck to learn as a programmer since you're usually coming into these without much of a network engineering background. I remember struggling a lot with both of these config syntaxes until a network engineer took me under his wing and taught me basics, principles, the engineering challenges of packet switching at scale, etc.
