Are there certain segulos for learning certain Gemara Mesechtos (Bavli or Yerushalmi)?
I think this is the best segulah a person can have. I have copied the link here: https://www.hidabroot.com/article/193322/My-Name-is-Chagigah
Brief description that man learned the tractate of Chagigah every day for thirty years some say sixty, when he passed away the Mesachta of Chagigah wept for him.
If person who is not so righteous but yet studied something wholeheartedly for the rest of his life, a segulah for him could be for the making of the next world.