Here's a comprehensive list of modern textbooks that cater to triathletes at various stages of training: novice, intermediate, and advanced. Each category contains credible and efficient resources focused on achieving optimal results.
### Novice Level
1. **"The Triathlete’s Training Bible" by Joe Friel**
- A comprehensive guide that covers all the basics of triathlon training for beginners.
2. **"Triathlon 101: A Self-Coaching Guide for