Finishing the story grants rewards. Cosmetics. Achievements. Titles etc. also the ability to obtain specific items like the mythic tribute which is nearly a free mythic item (run these as rotas). Yellow markers and purple markers should all be completed yes, you will gain exp. From 1-60 you run normal mode and get all your exp from quests turn ins. Make sure to get all mercs to level 10 for the best vendor items in the den. Hope this helps.
Edit:
Strongholds at level 45 grant HEAPS of exp so 1-60 grind is for quest exp. Do this for quick levels. As for your paragon farm people farming hordes. Pit 65s pit 85s pit 101s whatever you can clear in 2-3 mins.
This post was edited by thumpr on Oct 18 2024 01:17pm