OMG, finally I got this old post to appear formatted not only in the post-preview, but also in the community itself.
Secondly, resources to learn Mathematica have been mentioned here How to learn Mathematica and here Where can I find examples of good Mathematica programming practice? and here Are there good online video tutorials for learning Mathematica? … and then it depends on the knowledge you do have already to find an insightful learning path … for example, if you are a theoretical physicist and you read German by chance, why not look into Mathematica und C in der modernen Theoretischen Physik … a substantial body of work represent Trott’s Mathematica Guide Books