are you EU or US server?
for EU: for the common dungeon, just toggle to easy mode, and hit LFP, it is easy enough right out of the story.
for US: try to build a group in rec chat...I guess
for Deamonbane-EU:
if you start, just try to rec for a stage 1 group with the group tool, shouldn't be so bad as many just want to have it done.