Where can I find a basic book about calculus?
The best place to find a calculus book is in the Mathematics Library, 310 Vincent Hall (here's a map: http://www1.umn.edu/tc/maps/VinH/). When there, try browsing the shelves under the Library of Congress call number QA303.
Use MNCAT to search by keyword. Some of the other libraries, such as the Science & Engineering Library, may also have a small collection of calculus books, which may be especially helpful if you are looking for examples of calculus problem solving in applied science or engineering.
You can also find the current Calculus textbooks and solution manuals at the Mathematics Library Reserve desk. These are the current textbooks for Calculus I, II, and Multivariable Calculus, and they are available for two-hour loan. All of these, plus other resources, can be found on the library course page for each of the calculus courses. Just go to the Libraries home page and click on the Course Resources tab.