Invaluable tools online
Medscape requires a password. The web site is http://www.medscape.com/home .You can opt for them to send newsletters with updates.Merckmedicus also has resources such as online books, patient education resources, professional development, etc.
The email address is http://www.merckmedicus.com/pp/us/hcp/hcp_home.jsp
Epocrates has free online access now in addition mobile access for phone pda or Pda
http://www.epocrates.com/
These three tools have been utilized by me for quite a few years.
