Disclaimer: I am not a great pk'er, I am not a good pk'er, I am a barely passable pk'er but I know alot of stuff about alot of stuff and if I ever remember or choose to make use of it I COULD be a good pk'er. End disclaimer.

First thing, remember the skull? and the first question asked?
assume you are already dead... lots. quit caring that you die.
make learning something useful with this character be your only
goal. I have NEVER had as much fun in this game as I have with the
characters where I cared not one little bit if I died.
(See Nimelerion I'm pretty sure there is a pbf up. He was awesome
fun and I went from full con with trains to spare to con dead in 2 weeks.)

Play til con death, if you hero with 8 con you still hero'd.

Where is ultimately more powerful than a teleport potion.
take things slow and walk around near spamming where, you will
see where the edges of areas are, knowing how to get into another
area will ultimately save your life more often than anything else.
Later this will also let you know where the guy you were chasing
likely went.

For pk: Learn to run, spend one characters life just getting out
of pk, count each survival as a win. Once you get jumped and you
are confident you can get out if you choose, then you can look
to WHEN to get out in a pk. (I can do this, I just don't hehe)
THEN you make a character to hunt, just jump everyone you can
sure you'll die alot, but who cares, here the object isn't even
to land a kill, it's to make them run. then chase them. learn to
guess where people are going, get there ahead of them.
Pay attention to what class consistently whips you, play that
class next.

Personally I found the easiest way to learn where preps are is
to join a cabal and ask "hey where did you get that root/pill/potion?
next is to poke your nose into every little cranny in an area.
If a group takes you to an unfamiliar place, learn to get there
on your own and when alone go poke into every little hole you find.

I'm sure there is more, and I'm sure you want more detailed info
but that is like granting freebie naturalization when others have
worked thier asses off to earn the same thing, just plain not cool.

Gotta run, the wifey calls.