I initially contacted Mr. Vasquez to ask if he could advise me about online training for soundings and hodographs. It has been quite a few years since I was in school and I felt the need to update my skills in this area. Mr. Vasquez forwarded several helpful web addresses. He also suggested that I might be interested in the updated Weather Forecasting Handbook as there is a unit on thermodynamic diagrams.I have found the book to be helpful and useful. It is readable by professionals and non-professionals. I believe most folks with an interest in meteorology will appreciate the topics covered in the book. It'll make a good, valuable addition to your library.Jeffrey F. Kronschnabel