Necklace => remember the Dwarven jeweller in the Dwarven Halls/Dark Forest? Go and ask <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
Buying the dragon armour 2x => I think, it's a bug, but it's quite handy, if you choose to wear the unforged one afterwards (maybe better stats?) So, after the armour is complete, you wear everything, get a permanent skill - and then you can switch <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
Kiya
