It's unclear from the front page what type of reminders I can actually set. You give a lot of examples as to what will be supported in the future, but I can't

It's unclear from the front page what type of reminders I can actually set. You give a lot of examples as to what will be supported in the future, but I can't tell what is actually supported now. I'm trying it out anyway, but it would be nice to know those things without testing. : D