Sometimes,my friends ask me how to learn Linux.They want me to recommend them some books and some other study materials.
I think the following two books are very good study material.The first one make you know what Linux is. The second one make you know what can Linux do.Of course, you must do more experiments which mentioned in the books.
1. LINUX：THE TEXTBOOK
http://product.dangdang.com/product.aspx?product_id=9007683&ref=search-1-A
2. 鸟哥的Linux私房菜服务器架设篇（第二版）（附光盘）
http://product.dangdang.com/product.aspx?product_id=20076149&ref=book-02-L
At last, I suggest you build a linux from code source using “Linux From Scratch”. This distribution version’s offical website is http://www.linuxfromscratch.org/ .The easy install document is http://www.linuxsir.org/bbs/thread322894.html