If you are interested and can afford it, go on Amazon
and get the Neuro Notes flip book. It has a wealth of relevant info.
In the Neuro ICU, you will be seeing mostly CVA/head trauma, strokes, aneurysms, brain tumors, seizures, some ETOH withdrawal when it's really bad, hemorrhages, and some eclampsia.
You will need to know about your pain and sedation drips. You will need to know your pressors. You will need to know ICP measurements, what they mean, and what you need to do to fix them.
You will need to know the s/sx of stroke and it will help to be familiar with the NIHSS. You can actually get certified online for this one, as it is a fairly straight forward assessment.
You will need to remember to keep it quiet around patients with ventrics so you don't raise their ICP. Keep turning, bathing, ADLS, light, noise, and all stimulation to a minimum.
Keep your sense of humor and don't get too involved. These can be some of the saddest cases, especially when it's a young victim.