To clean your leather properly;
Bush the leather down with a soft damp cloth after removing dust. Do this periodically to avoid dirt from sitting on your leather for too long or you will have to do a deep clean which can be harsh on the leather.
Do not use soap to clean the leather- if you need a cleaner its best to use leather cleaner
If your leather becomes damp, dry it out slowly in a dry warm place. DO NOT use dryers to remove the dampness.