Congratulations! Segment 14 of the Silmarillion Reader’s Guide covers chapter 24 of the Silmarillion, which is the final chapter in the Quenta Silmarillion!!! If you’ve made it this far, you’ve just completed the major story in the book, and are about 2/3 of the way through!
See parts 1-13 here, in case you missed them. Next up will be segment 15, which will cover the Akallabeth, the next book of the Silmarillion.