Most people want to help a grieving friend and have no idea how, so they send one card, say something clumsy, and then go quiet because they are afraid of making it worse. The grieving person is left more alone the moment the casseroles stop. Helping is not complicated, but it is specific: show up, keep showing up, and do concrete things without waiting to be asked.
This is the companion to what to say to someone who is grieving. This page is about what to do.