Conducting looks like waving a stick and is really three crafts fused: a clear physical technique, an intimate knowledge of the score, and the leadership to shape a hundred musicians in real time. Books cannot replace a podium and an ensemble, but they build the foundation, and reading them in order keeps you from mistaking arm-waving for musicianship.
The path moves from technique to the deep knowledge that technique serves, then to interpretation and rehearsal craft, and finally to the reflections of master conductors. Each stage answers what the previous one leaves open.
Learn the technique
Start with The Grammar of Conducting by Max Rudolf, the standard reference on baton technique, beat patterns, and cueing that most programs use. Then Conducting Technique for Beginners and Professionals by Brock McElheran is the clear, practical companion that gets a novice's hands moving correctly. Together they give you the physical vocabulary before you worry about interpretation.
Know the score deeply
A conductor's authority comes from the score. The Study of Orchestration by Samuel Adler teaches you to read an orchestral score with understanding of every instrument, and Treatise on Instrumentation by Hector Berlioz deepens that knowledge from a great composer's angle. A Conductor's Guide to Nineteenth-Century Choral-Orchestral Works by Jonathan D. Green then shows how deep preparation of specific repertoire actually works.
Interpretation, rehearsal, and mastery
Now the art. The Compleat Conductor by Gunther Schuller is his provocative, detailed argument about honoring the composer's intentions, and Conducting the Music, Not the Musicians by Uri Golomb reflects on what the gesture is really for. Then learn from the legends: On Conducting by Richard Wagner is the historic essay that shaped modern interpretation, On Conducting by Bruno Walter offers a great humane conductor's philosophy, and Talking About Conducting, another Schuller volume, closes with candid wisdom on the profession.
Read in this order and conducting becomes a discipline you can build rather than a talent you either have or lack. Follow the full path, then seek every chance to stand in front of real players.