I would highly recommend working through these tutorials. They will teach you new tricks and techniques, and take hardly any time at all to complete.
This tutorial guides you through use of the Fire Media. It’s based on the demo I give at shows.
This tutorial introduces basic concepts of shading and alpha channels.
This tutorial explains the basis of using DisplaceMap and alpha channels to create cool text effects.
This tutorial attempts to give a few more ideas on the uses of the Fire media, notably Lensflares.