Sure! Below is a list of respected textbooks categorized by skill level for natural bodybuilding. These resources cover topics such as training techniques, nutrition, physiology, and program design.
### Beginner Level
1. **"Body for Life" by Bill Phillips**
- A well-structured program focusing on exercise and nutrition for beginners.
2. **"The New Encyclopedia of Modern Bodybuilding" by Arnold Schwarzenegger and Bill Dobbins**
- A