So i just started and im lvl 46 now rolling some dungeons and story quest. But when i look on that LFG list, then i see fractals and raids and some other events, world boss ect..the list is full of "quest" and i dont know what parts to focus onand why... what are the rewards ?should i start to do any speciel quest/missions on that list now ? or wait to i get 80? also i dont know what fractals are