Need a little Help!

I have finished the game and farmed a whole bunch, but there are 2 things I have never done and can't because I have no experience doing them yet and can't get in groups because of that. So I need help in doing these 2 things

1) new UW
2) PvP

I belong to a guild but most of which do not want to PvP and the rest are not up the the tombs area. So is there anybody who can help, or can anybody point me in the right direction for help? Thanks in advance!

New UW doesn't really require any particular skills, and it's not that hard to find a group; usually people form a balanced 8-men party so you have a chance to fit in whichever class you are. And there's not much you need to know, you'll find out when you battle in what u need to do. Just follow other member's advices.
And about PvP, if you wanna do it seriously then you need a guild to support you.
To practice a little, do some random arenas to figure out what goes on vs other players; you might wanna try out a standard build b4 u think of oyur own, there's a whole section of these forums dedicated to PvP builds.
If you don't wanna change guild and still do Hero's Ascent, then your best bet is to build a IWAY warrior (which i deeply hate) and find a group that accepts unranked players. Otherwise try to go with other popular builds, such as spike rangers or boon prot or tainted or order necro; no way you can try out your ideas like that, pugs are not meant for that, they use pretty standard builds, you'd need a guild to test out.
Good luck

1) B/P barrage/pet way is the easiest way.
5 rangers with barrage 1 MM 1 Orders 1 Monk infuse/oob/Woh or whatever i saw a Mantra of recall monk

2) PVP- Iway is a fame farmer
4 Iway Warriors 1 Orders 1 Orders or 1 Orders and 1 Taint and 2 Trappers

Many builds varies and has many diffrences.