You can't use a set directly; rather, you have to trade it for its parts. Go to the Grand Exchange and talk to the Grand Exchange clerk (or better, right-click and select "Sets"). Then right-click on the set in your inventory - there is an option that will exchange the set for its parts.
Well it all depends on your own preferences. RuneScape is tailored to appeal to both young people and older people, so perhaps by playing the full game in all it's glory, you will discover for yourself what is best in RuneScape for you.
either its lag on your computer OR they are at a different area than where you are at but think its probably lag
there the same
You don't. However, you can make mithril items with the smithing skill. You make them from mithril bars, which you can make yourself from mithril ore and coal, which you can get with the mining skill.
It costs about 18k
Full Rune.
No, level 128 ghosts that are in the RuneScape wilderness will not drop Dragon Full Helms. The only RuneScape monster that drops the Dragon Full Helm is the Mithril Dragon which has a combat level of 178 and drops the helm as a "very rare" drop.
The full rune armour set was 300-400k but now its less then 200k. A rune platebody cost about 60-80k but you can buy it from Oziazh for around 65k but only after dragon slayer.
buy it, kill steel drags for legs and mith drags for full helm
sara full helm not mem and dragon full helm i think
grand exchange.
it is not impossible all u have to do is get an ornament