Metaphysical Poets And Their Poetry

[Literature<3]

Hi, I'm sitting my A-level English exam on metaphysical poetry in a month and I need some help revising. Hopefully this will help anyone else sitting the same exam.

Does anyone know anything about metaphysical poems?
Has anyone sat this exam in the past?
Any ideas as to what would be a good thing to look out for?

The book we are looking at is Eight Metaphysical Poets by Jack Dalglish and the eight metaphysical poets are:

John Donne
Henry King
Andrew Marvell
George Herbert
Henry Vaughan
Thomas Carew
Richard Crashaw
Abraham Cowley