Fresher is best with citrus, but it sounds like these were gathered recently, so even if they were dried briefly, they should still be fine. My brother has had great success germinating all manner of citrus seeds using the ziploc bag and wet paper towel method. No fridge. I'd reccomend trying this right away with at least some of the seeds while they're still very fresh. If the paper towel starts to mold replace it, or you could add a drop of hydrogen peroxide to help prevent it. Once germinated, transfer to seedling pots/soil. Can be grown indoors for a little while in a sunny window till winter is over, or outside if temps are mild where you are. Just don't let them freeze. Manture trees in the ground can survive a little light frost, but not seedlings.