There's the touch search widget that is already customized for WebMD and other resources can be added as well - check this thread from the beginning.

There's MStarDict with a lot of medical dictionary databases: http://talk.maemo.org/showpost.php?p...6&postcount=18 and you can add new ones if you find.

The internet is full of .chm and PDF books but unlike the appstore, no one bothers packing them into "apps" so you can just copy them over and open them with a viewer of your choice.