Best 4 in order for welling are

Warlock
Alchemist
Mage
Rouge

If you use mage pump your first 10 points into vit then go all int after that. Get Int weapon and armor then High ee dmg charm and high ee healing charm(this is crucial)

If you use rouge pump all stats into int. Get int Weapon that isn't dagger/staff(you can get higher stats for cheaper(since less demand)) Int armor that's not a robe(same reason as weapons)
Then finish off with High ee dmg and heal charm

Basicall just attack the monsters then once you need to heal hit your hot key and heal yourself then switch back and start dmging him again. It's pritty simple

he dont got the fg like rich ppl n

so Rougue would be Cheapest n still be effective

this
but hey...while im lvlin up in cata
should i go for heal mastery over intel on arm/charms?

get heal mast n heal when ur cata mates are dieing n if they like high life tell em ur swapping gear n switch to like a wep n charm or something thats melee related