is there a way आप can mark your stories you've already read या not, cause after a while i keep पढ़ना the same stories

No, but आप can add stories to favs. and click the update box at the चोटी, शीर्ष twice, that'll give आप the update तारीख, दिनांक from closest to that day, to the farthest... hope i was help!