There is an "education bookstore" at the intersection of Jinger Road and Hongqi Road (next to Jiameijia Supermarket on Jinger Road), which is easy to find. You can take the No.9 bus to the gate of Jinger Road Primary School, and then cross the road to see Xinhua Bookstore, which is in the east.

That house has comprehensive information and affordable prices, and I bought all my review materials there.