It’s a 2-step process*, at least until we’re able to integrate the two steps. The first process is to put the league(s) you’re interested in on your Calendar. This will allow you to use the calendar to sign up for specific events for those leagues. The second process puts you on a mailing list, so that when your league manager(s) post announcements, you will receive an email informing you. Both processes are explained in detail in separate FAQs on adding leagues to your calendar and signing up for the league email lists.