Anatomy Books for Riggers

"Better Bondage for Every Body: With Rope Bondage Experts From Around the World" by Evie Vane is a good one I think. MissDoctorRope also teaches some good webinars on it

Two resources that helped me gain experience with being a rigger were:

https://www.amazon.com/Shibari-You-Can-Use-Japanese/dp/0977872726/ref=sr_1_2?dchild=1&keywords=shibari+you+can+use&qid=1597685081&s=books&sr=1-2

https://www.amazon.com/Bondage-Paperback-Author-Chanta-Rose/dp/B00E7HP4MQ/ref=sr_1_1?dchild=1&keywords=bondage+for+sex&qid=1597685193&s=books&sr=1-1