1. Consumer's guide to NLP Training by Steve Andreas
2. One of the most revealing articles about NLPers from Andrew Austin.
3. Some Provocative thoughts about NLP by Nick Kemp.
4. Modeling by Robert Dilts.
5. John Grinder's Interview on New Code NLP.
6. Multiple Models of NLP by Charles Faulkner
7. Which NLP Certification is better? by Krish. Srikanth