Warrior Skill Trainers:
1st: basic skills frenzy+Heal Signet, right outside ascalon. [first quest u take]
2nd: Warmaster Grast swordsmanship - sever Artery+Gash, Green Hills county
3rd: Duke Barradin Hammer Mastery - Hammer Bash, Barradin Estate
4th: Little Thom Axe Mastery (my fav newbie skills) - Dismember+Executioner's Strike [woot!], Barradin Estate
Necromancer Skill Trainers:
1st: Munne (aka hottie) - basic skills Life Siphon+Animate Horror+Vampiric Touch, entrance to catacombs by the abbey
2nd: Kasha (aka zexy ^_^) Blood magic - Blood Renewal, Green Hills County
3rd: ??? (old scholarly dude) Curses Magic - Faintheartedness+Parasitic Bond [not too sure, I didn't meet this guy when I remade], deep inside the Catacombs
I think that's all of them for Warrior/Necromancer skill trainers for Presearing.
If you've met them, let's try to list and compile ALL of the possible skill trainers, where they are, and what they can teach. THEN we'll have the diversity that we desire!