Well i was searching a nice guide to do the Hero of Wrothgar archivement, and i found this one that i'll put you here: https://forums.elderscrollsonline.com/en/discussion/224059/hero-of-wrothgar-house-of-orsimer-glories-costumes
I think its very easy to follow the instructions. For the guy who did the guide it took him like 30h to do all the requirements, but i've been playing like 15 and i need just 15 more quests.
I'll give you a personal tip, so you can download this addon: https://www.esoui.com/downloads/info667-Destinations.html
And it will show you some interesting places and some museum pieces, also you can set it as you want, to show you just what you want on the map.