Int or Str Iop? i dont know what to get. either a str iop for pressure or int iop for sword of fate and destructive sword.

Well, if you're new to the game, a Strength Iop is definitely the better choice. Int iops need scrolling to work effectively and even when you get strengthstorm, a 9 AP set below 100 is very costly. However, the int iop definitely has it's advantages. You can hit for infinite AoE with SoF, Reduce crits with Destructive, rape MP with cut and Destroy enemies with SS.
A strength Iop is quite easy to build, requires less thinking ad planning and less money. So, if you're new, a strength Iop is definitely the better choice. Look at Wiki or imps for good strength Iop guides.

Here's a decent Str Iop guide that I'm using at the moment if your still looking.

http://www.wikia.com/dofus/Iop/Strength

I'm going strength just because i saw the spells at higher levels are strength hope it works out and i can do lots of damage