I was/am a new grad that went directly into the ICU. I graduated in December. I took a critical care class while orienting in the ICU. The content of the class goes over systems as they apply to a critical patient. Like nursing school, plus. The class introduced hemodynamic monitoring, ventilators and ACLS protocols, among other topics. The class I took was an AACN program. Good class.
I have been off orientation for 3 months, if not more, now. I am learning something new every shift. I think one of the main things to be successful is to know your limitations. Understand when to ask for help and don't be afraid to ask. Take time at home to look up things and delve deeper to understand new concepts or clarify questions. My co-workers are real supportive of me.
Hope this helps.