[Discuss] need some networking knowledge

[J.Bakshi]

Dear friends,

hope every one is well :-)

As there are some network gurus in this list I may be permitted to ask some 
help regarding networking. I am not a network professional at all. Now I like 
to know about linux based networking, server configuration (like samba, 
appache, IMAP etc) and securities. Some books are available in the market. 
But I am interested in net based Tutorials. [ yes, bcoz those are free :-) ]
But I have found a lot of such tutorial in net, so I am flooded with those.

Could any one kindly point out such tutorials which can help me to understand 
and implement the servers, network, intranet in short period of time say with 
in one month if I dedicate most of my time to do these ?