Hope you like the following Runes of Magic guide which selected from the other website by me, but it's not my work, Mmobread just give it a summary. Hope it can help you some.
Well, the skills of warriors is so strong. For Novice skills don't make it to max lvl's because you will just waste your money(runes of magic gold) for downgrading it. Because if you reach Apprentice you'll take it away from your list of skills, because there's a higher dmg skills than for Novice and that's, and make sure that you get all your skills.
But for A. Expert, take this skills- Blade Aura, Cascade Break, Round Cut, Down Breaker and the rest don't take Down Breaker because for Duel Purposes it increase the down percent for the enemy to knock out and others because you have to. For Master, take all the skills including the sword cannon for everything and especially the aura barrier. Here We would provide you the cheapest runes of magic gold with the fastest delivery.
For G.Master, take all the skills too but we recommend that don't get the advanced blade aura. just get it if you are Completer because lv1 advanced blade aura is only 120secs. and it's not enough just stick to your current blade aura. For Completer, you should get the Seismic Wave, and you can get the Battle Shout because it's HP UP and other, and it's good for your PT members but if you want some damage, you can get the other one.