Here's a curated collection of credible and contemporary textbooks for triathletes, organized into three levels: novice, intermediate, and advanced. Each category includes a selection of resources that cater to the skill level and knowledge of the athletes.
### Novice Level
1. **"Becoming a Triathlete: Your 24-Week Training Guide for Sprint and Olympic-Distance Races" by Michael K. O'Leary**
- A comprehensive guide designed for first-time