I have been a nurse almost 5 yrs. I was in home care for 3 yrs and just went back to the hospital in January. Oncology...I have multiple classes to take before December. ACLS being one of them. I have to take the class next week. I was briefly reading the manual and feel overwhelmed. Like it is over may head. I am concerned I will not be ready but have no choice as it is required. Any tips?