Hello,
I am a newplayer and I have a few questions:
I was wondering how to get more renown in the expac areas? I see theblue markers,but arent there other ways to gain renown? Itfeels very slow.World events doenst seem to give anything ( i completed the campaign)
Why should I do renown anyway? Is it worth it? Or just do dungeons and raids?
What to do at level 80?
Ty 
Lots of stuff gives renown even after you’ve completed all the quests. There are weeklies in each zone to look out for, special events and the weeklies from Dornagal. Make sure you’ve got your chat pane showing when you gain reputation as well. Gaining renown gets you access to more items on the vendors, including some good ilevel gear and once you’ve accessed that on one character you gain access on any alts too so you can quickly gear up new alts just by buying the reputation gear from each vendor and doing some delves/dungeons/LFR.
Each time you gain a level of renown, you’ll also get a reward from the NPC … sometimes crests or other currency.
ty very much… last question: I am doingdelve. but cant do tier 4. it says complete kahz algar main story on your warband.But I completed all story quests…Got 1 character. What is the problem?
Looks like potentially there may be a bug (surprise surprise) … see https://us.forums.blizzard.com/en/wow/t/cant-do-delve-tier-4/1955358 for full info but basically you might have to re-complete a tier 3.
If that’s not the issue, just double check you’ve completed the main storyline - sometimes quests don’t initially show until you’ve done something prior to trigger it, either a quest or a hand-in elsewhere, or getting to a certain level.
did you skip the quests with Brann on the Alt? you need to do teir 1,2,3 before 4 also if that is the issue.
Yes thats was the problem. Ty mate.