It's almost the same rule as sniper build:
High dexterity, divisible by 10 to get bonuses and not waste points.
Enough agility to hit max attack speed (195) *Only Increase after dex*
Enough strength to carry a decent amount of yggs (generally 100-130)
Dump the rest in vitality and you should have maybe 250k hp if fully geared.
Most gear in this server can be sued universally (besides weapons) for every other class:
Since you said you're poor the best armor would be the Knight set, which costs about 10-15 tokens in-game.
You'll also need a quest aura and rucksack for beginners as well as some ND dex belts.
When you get enough money you can buy F.King set, emp, donation rucksack and donation belts which is pretty much the required gear if your planning on regular PvP.