Howdy..New here couple of questions.

[khanable]

There are three (technically two) project 1999 servers: blue (highest population PVE), red (pvp), and beta (which doesnt really count because it's only velious).

So the only choice for you (if you want PVE) is going to be the blue server.

I don't think you'll have much issue getting a group as a warrior, but you will have some issues holding aggro at the mid levels. There are nice proc weapons available but things die so quickly you can't really ever count on them. No one really waits for the tank to build up some threat here so that's another issue.

Group with someone who can root and hug the mob's nuts.

Necro is a good choice if you're willing to solo much more - they're extremely efficient solo'ers. Sesserdrix wrote a dissertation on the Necromancer class that is pretty great - It'll help you find good spots to solo (just google it). I wouldn't expect too many group invites as a Necro.