Clean carrara marble w/warm water and detergent (specifically made for marble or store-bought detergent like Dawn). Rinse with clean water and thoroughly dry with soft cloth; several times a week. Use Nothing Abrasive. Seal 2-4 times a year w/ marble sealant. See site for polishing to remove etching, and handling stains. (Find out if it was sealed and how--some needs to be resealed every couple years, some every 15). Use nothing acidic like vinegar or lemon.