Hi Marty!
It's a pleasure to have you amongst us and I'd love to share with you the teachings of Islam, and God willingly we will benefit from eachother. :) Your desire to buid bridges of understanding with others is truly admirable. An excellent place to start learning about Islam is the following website:
http://www.beconvinced.com
You asked about Muhammad (peace be upon him), who was the final messenger sent by God, confirming the message brought by Prophet Noah, Abraham, Moses, Jesus and all the other Prophets (peace be upon them all). He preached the same message, that is to worship One God and to enjoin righteousness and forbid evil. For more information, I would refer you to the following links on Prophet Muhammad (peace be upon him):
http://islamonline.net/English/In_De...24/index.shtml
http://islamtoday.net/english/prophet_main.cfm
As for the Qur'an (
Koran is the less acurate spelling) it is believed to be God's final revelation to humanity confirming what was revealed before it and providing a source of guidance and mercy for the God-concious. On the Qur'an, here are some links describing and introducing the Qur'an:
http://islamtoday.net/english/discov...&sub_cat_id=41
http://www.islamonline.net/english/i.../topic03.shtml
You can read the english interpretation of the Qur'an here:
http://web.umr.edu/~msaumr/Quran/
If you have any questions, please feel free to ask! :brother:
Warm Regards