Your sincere question is a sign that you are in the quest for truth and will be accepting of it when it is presented to you. May God bless your pure intentions and guide us all to the straight path.
Islam is a verb and literally means submitting to the will of God in peace. This is unlike most of the major religions that are named after a person or place, e.g. Judah-Judaism, Christ-Christianity, Buddha-Buddhism, Indus Valley-Hinduism, etc. So Islam is an active verb and the one who submits is a doer of Islam or an Islamer. In Arabic there is a prefix 'mu' like the suffix 'er' in English. So a Mu-islam or Muslim is one who submits his/her will to the will of his Lord. All the Prophets sent by God to guide humanity from the time of Adam to Noah to Abraham to Moses to Jesus and Muhammad (may the peace and blessings of Allah be upon them all) were muslims in the true sense because they devoted their lives to the God's mission - to take mankind from darkness to light!
Ready to DO Islam? :)