I Touch and Psychiatry

I started a PT job in Geri Psych recently, this is all new territory for me, as I worked in Primary Care in the past.
I am enjoying the job, but finding the need to look things up a lot! so I want to get an itouch to use but I am not sure if there are apps specific to psych and/or geriatrics?
does anyone know if or where i could find psych specific apps