Good book recommandation for iputils and PBR in Linux

Hi,

I am an amateur in network admin and run my homelab. I currently have a need to create some complex routing logic for a docker container, basically replicating the ip rules generated by Wireguard's wg-quick but manually.

Since years I wanted to learn a bit more about Policy Based Routing and better using iputils ip command for this.

What comprehensive book or learning material do you recommend ?