Starting as an RN with VA hospital

I been a stayed home mom and have not work for over a year and just a little nervous to start again. Anyone that can give me any advice on how to prepare my self to work with them..just anything. I have reviewed pharm, major diseases Diabetes, HF, electrolytes, ABGs. I just got the 2014 drug book. I'm just nervous because I have only done a year in long term care, and been a nurse for 4 years. never worked at a hospital where I know patients are more critical. technology more updated and so on. any comments will be appreciated?