OP is asking for a servlet tutorial and posting him a spring reference guide (that too of an older version) is not a good idea.
@OP: If you are looking for a book, I would suggest you pickup a Head First Servlets and
JSP book and start studying... If you are looking for a online material, there are lot of materials available, and i am not much aware from where the beginner can start, so we would want to wait for some one to post few links...
However, If you any questions/doubts, you can always come here and post and the ranchers will be more than happy to hep you..