A: For fresh coffee stains, first try cold water.
Run cold water through the back of the stain. For a very fresh stain, this might be all that is needed. It is important to go through the back of the stain. You want the water mixed with coffee residue to have to travel through the least amount of fabric possible, so going out the way it came in is your best bet. If the stain isn't fully removed, or your stain is old, you'll need to move on to the second step.