# Good electronic references or good textbooks (pdf) in some topics

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.

• What is calculus $4$ exactly (multivariable?, analysis on manifolds?, what's the textbook you're assigned?) and what's wrong with your campus's library? – user137731 Dec 29 '14 at 16:57