1, academia
Academia is a place to share and follow up research. Although the main business is to retrieve academic papers and track scientific research results, there are still many classic textbooks in academic circles, including textbooks at home and abroad.
In particular, undergraduate textbooks of basic disciplines in China, such as advanced mathematics and linear algebra published by Tongji University, have been included in academic circles.
2、BookBoon
BookBoon is a website dedicated to collecting and sorting out electronic teaching materials. There are all kinds of e-books, especially textbooks, and the resources are very comprehensive. There are *** 10 types of electronic textbooks, and there must be resources we want.
At the same time, BookBoon also provides completely free downloads. Officials say its free textbooks and paid business e-books are downloaded 75 million times a year.
Gutenberg plan
Gutenberg project, also known as Gutenberg project. This is the first and largest public digital electronic library. The project provides books with expired copyright in free and electronic form.
4. Free e-books
Freebooks is also an e-book collection website. Although the above e-books are relatively new, you need to register to download them locally. In order to prevent abuse, free e-books can only download five e-books per account every month.
5. Free computer books
Free computer books is a website with a sense of the times, which contains all computer-related books. Although it seems very, very unreliable, the resources on free computer books are still quite high quality.
The basic books recommended on the homepage are all the latest editions from 20 19. For example, the book Introduction to C and GUI Programming is included in C &；; GUI programming textbook.