I can give you a short answer or a long answer. Muslims believe in Islam. Islam is a religion that is a part of the Abrahamic religions. We believe in the prophets of the New Testament and the "Old Testament." We believe Muhammad (SAW) to be the final prophet of God. We (Sunnis) actually have much much more in common with Protestant Christians than many realize. (We even believe Jesus to be the Messiah). If you want to learn more, questions are always welcomed. ISW usually has a community outreach dinner once a month- we don't proselytize, just a good meal. Or you can come basically anytime to ISW and visit the office where someone would be glad to answer any questions.
I'll try my best to concise it small as possible. We believe Islam is the original message that's been carried out by Adam as(the first man and prophet) thru the last of the prophet Mohammad (saw). Among the others are Abraham, Moses, Jesus the son of mary (peace be upon them all). The message of strict monotheism to not associate any partners with god or Allah and worship him alone. I hope I was able answer your question. And if you want to visit the mosque anytime, you are more than welcome to come and observe how we pray. There will be some amazing people who will be more than willing to answer any question you have. Just make sure you call during the office hours to see who will be available. Thank you.
Thanks! Your answer is awaiting moderation.