:sl: (May peace be with you) James :),
That is a very interesting question. As I have heard, the number of sites providing false Islamic information is increasing, unfortunately, and as you are new to Islam there is no way to be able to be completely certain whether what you are reading is true or false. At this moment in time it would probably be best to ask people, or LI.
To your question (if you were asking it), no we worship Allah (SWT) and not Muhammad (PBUH), we believe Muhammad was a Prophet and not to be worshipped as he is not Allah.
About the site, it seems alright. Maybe some members can insha'Allah (God Willing) provide you with some sites that they are certain of that are reliable. I have one:
http://www.islamreligion.com
Any further questions do not hesitate to ask :)