It's best to go to "Huachu" in Hao San Street, where computer books are basically there. There is also a "Da Song" book in Hao San Street, which is a professional bookstore. There is also a large comprehensive bookstore "North Book City" on Hao San Street. There is also a book wholesale market at the entrance of Hao San Street, which is in the hardware building. I'm not familiar with taking a bus. I always ride a bike. Hao San Street is a computer city in the northeast of China.