What are signs and symptoms of an head injury?

Im looking for an overview of how a patient would react to an open/closed injury to the skull. MOI 25 yr. male got hit in the head with a baseball bat. Would the pt. have increased cranial pressure? Possible subdural and epidural hematomas? Cerebral spinal fluid? Battle signs, raccoon eyes? Tachycardia/Brachycardia? Fast/Slow respirations(irregular)? Hypo/Hypertension? Pulse? Basically im looking for some of the common signs and symptoms of significant trauma to the skull. How would the body compensate or react following a serious MOI of the Cranium?