Start with high-confidence local area networks books, then narrow by subgenre or adjacent topics.
CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide
Jerome Henry, Robert Barton
CompTIA Network+ N10-008 Cert Guide
Anthony J. Sequeira
CWNA
David D. Coleman, David A. Westcott
Packet Guide to Core Network Protocols
Bruce Hartpence
SDN: Software Defined Networks
Thomas Nadeau, Ken Gray
Ethernet: the Definitive Guide
Charles Spurgeon, Joann Zimmerman
Network Warrior
Gary Donahue
Juniper QFX10000 Series
Douglas Hanks
Juniper QFX5100 Series
Arista Warrior
Cybersecurity for Small Networks
Seth Enoka
