Hi
A couple of good endocrinology sites:
<a href="http://www.univ-st-etienne.fr/lbti/Mednucl/AtlasEnd/aindex.htm" target="_blank">http://www.univ-st-etienne.fr/lbti/Mednucl/AtlasEnd/aindex.htm</a>
<a href="http://www.endocrineweb.com" target="_blank">http://www.endocrineweb.com</a>
I don't know any with practice exam questions. You could try at <a href="http://www.mrcp.com" target="_blank">www.mrcp.com</a> but you have to subscribe and the questions are for the MRCP exam rather than undergraduate.
Chris
<a href="http://www.dissectionroom.com" target="_blank">www.dissectionroom.com</a>