HI, There are many books giving Basics.But what i found is best red hat documentation in following order
STEP-by STEP guide http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/step-guide/ Introduction to System administration http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/admin-guide/ system administration http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/sysadmin-guide/ For advance topics Reference Guide http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/ref-guide/ but the best book covering all topics is Red Hat Linux Networking and System Administration by Terry Collings Kurt Wall Sridhar
