Well now I am interested in good books that I can find in the web of Probability (from basic to more difficult),abstract algebra,calculus 4 or complex calculus. All of them with exercise and the solutions please for practice.
Can you help me please with this?, thanks in advance :).
In terms of .pdf suggestions, Robert Ash has a nice Probability text, "Basic Probability Theory," and you can find a .pdf version of Bertsekas/Tsitsiklis "Introduction to Probability," used at MIT in a nice course in the electrical engineering department. Ash also has an introductory graduate text in Algebra and a text in complex variables (neither of which I've perused personally), available on his webpage.