I just installed openbsd 3.4 and I think I bit off more than I can chew

[suleyman <suleyman@comcast.net>]

I installed openbsd 3.4 via network install. I did not install X sets.
This is to become a server- web, mail, smtp, pop & webmail for maybe 20
users.
First issue is I need to apply patches. To be be blunt I dont have a
clue how to patch. I am looking at this url
http://openbsd.org/faq/faq10.html#Patches
I have installed wget on the server but used lynx to download 3.4.tar.gz
(all patches for system to date, I think)

The matter of retrieving source code before patching has me quite
confused. /usr/src/ is empty. What exact source code do I need to
install to apply all patches?
For example this security fix
"011: SECURITY FIX: February 8, 2004
An IPv6 MTU handling problem exists that could be used by an attacker to
cause a denial of service attack against hosts with reachable IPv6 TCP
ports."
I have the patch for this but at least for me it is unclear what source
code I need on my system before patching???

I downloaded tepatche-0.85.tar.gz which I read about in sys admin.
Figured it would be helpfulin patching. Obviously I am not a Sys Admin
;-) On the tepatche web site it states "uses Perl's Net::FTP module".
"..ports (p5-libnet).
In looking through /3.4/packages/i386/ on a mirror, I can not find
perl5, I find many p5-***** packages which look like modules to me.
I do not have ports installed though wishing I had installed ports now 

Any help would be appreciated. Also if anyone can direct me to docs on
the level of "OpenBSD for Dummies" that sure would help ;-)
Thanks
Suleyman