主题：推荐一个NMR基础教学的网站

查了一下，似乎没有推荐过。
这是Joseph P. Hornak做的一个介绍性的在线电子书。
http://www.cis.rit.edu/htbooks/nmr/bnmr.htm
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[celan话]:谢谢shxie斑竹对核磁的关怀!
这是一个不错的NMR基础教学网站,内容图文并茂,我们论坛上有一些基础问题的提问也可以在这里找到答案.建议有兴趣者研读.
多看NMR的英文资料很有好处,可以熟悉NMR术语,概念等的英文表达方式,对从事课题研究,研读NMR文献,撰写论文都是有益的.这也是我学习的体会,供大家参考. 
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贴一下content：
CONTENTS
Preface (Help)
About the author
Introduction
NMR
NMR Spectroscopy
Units Review
The Mathematics of NMR
Exponential Functions
Trigonometric Functions
Differentials and Integrals
Vectors
Matrices
Coordinate Transformations
Convolutions
Imaginary Numbers
The Fourier Transform
Spin Physics
Spin
Properties of Spin
Nuclei with Spin
Energy Levels
NMR Transitions
Energy Level Diagrams
Continuous Wave NMR Experiment
Boltzmann Statistics
Spin Packets
T1 Processes
Precession
T2 Processes
Rotating Frame of Reference
Pulsed Magnetic Fields
Spin Relaxation
Spin Exchange
Bloch Equations
NMR Spectroscopy
Chemical Shift
Spin-Spin Coupling
Time Domain NMR Signal
+/- Frequency Convention
Fourier Transforms
Introduction
The + and - Frequency Problem
The Fourier Transform
Phase Correction
Fourier Pairs
The Convolution Theorem
The Digital FT
Sampling Error
The Two-Dimensional FT
Pulse Sequences
Introduction
90-FID
Spin-Echo
Inversion Recovery
NMR Hardware
Hardware Overview
Magnet
Field Lock
Shim Coils
Sample Probe
RF Coils
Gradient Coils
Qadrature Detector
Digital Filtering
Safety
Practical Considerations
Introduction
Sample Preparation
Exchange
Probe Tuning
Determining a 90o Pulse
Field Shimming
Phase Cycling
1-D Hydrogen Spectra
Integration
SNR Improvement
Variable Temperature
Troubleshooting
Cryogen Fills
Unix Primer
Carbon-13 NMR
Introduction
Decoupling
Population Inversion
NOE
1-D Spectra
2-D Techniques
Introduction
J-resolved
COSY
Examples
Advanced Spectroscopic Techniques
Introduction
Diffusion
Spin Relaxation Time
Solid State
Microscopy
Solvent Suppression
Field Cycling NMR
Glossary
List of Symbols
References
Usage Statistics
Software License