My name is Cecilia, my husband and I live in Atlanta, GA and we have just inherited several real estate properties in California from a family member, Management Class help

My name is Cecilia, my husband and I live in Atlanta, GA and we have just inherited several real estate properties in California from a family member. We are thinking about keeping the properties and hiring a management company in Northern California to help us out. There are a number of things we are confused about and woudl like you to explain them to us and tell us how they relate to different properties.Escalation clause-  What is it?What type of property uses one? Why would we use it? How would it help increase the value of our property?Percentage lease? What is it?What type of property uses one? Why would we use it? How would it help increase the value of our property?Net lease? What is it?What type of property uses one? Why would we use it? How would it help increase the value of our property?Triple Net least? What is it?What type of property uses one? Why would we use it? How would it help increase the value of our property?Gross lease? What is it?What type of property uses one? Why would we use it? How would it help increase the value of our property?What does quiet enjoyment mean, and does it have anything to do with property management?