Welcome to forums.
Corpse retrieval - there is fountains of rebirth, these are the places you will rez at and there just like way points, you also rejoin any newly created games at your last fountain of rebirth, it just makes things easy.
My first times playing EQ i got lost trying to find my corpse and try using the map but my toon was to low lvl to have map features that showed my corpse location so i had to run and find it by memory and i was upset, a good many corpses i just had to give up on and then i got forced to stay at the noobie log to lvl up and forced to remember were i was at all times, thats the stoneage of gaming and i think in time if you play the demo a few more times you will favor the fountains of rebirth, much like i do now.
Big hugs,
Lestai