internet where I can find free study materials to learn networking and management of ABT?

I have to learn topics Introduction to networking and network management basics Unix Commands and Utilities (including Midnight Commander on Linux) KDE (Linux) Networking with Linux (With installation) Telnet user administration settings file system disk quota management and routing partitioning configuration FTP DNS DHCP configuration of Samba configuration settings NFS server configuration Configuring Sendmail Apache web proxy and firewall services

http://en.wikipedia.org/wiki/UNIX

KDE SC 4.4 Preview (Part II)