Keep it clean & dry. Try to keep it elevated & keep ice on it.
To clean it; 1: be sure to wash you hands after removing an old dressing and before cleaning the wound. 2: Wash your hands again after cleaning the wound & applying the new dressing. 3: DO NOT use skin cleansers, alcohol, peroxide, iodine or soaps with antibacterial chemicals on the wound unless a doctors says its okay. It can damage the wound tissues and slow your healing. 4: DO NOT put any lotion, cream or herbal remedies on or around your wound without asking a doctor.
When you take a shower wrap it up & clean it after you get out.. Basically your going to need a doctor for meds & if you can use anything.