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.
